Communication technique employing variable information transmission
First Claim
1. A method for transmitting information within a communication system comprising an application node, a base transceiver node and a field transceiver node;
- said method comprising the steps of;
transmitting information between said field transceiver node and said base transceiver node at a variable data rate via a first fixed bandwidth information channel, wherein said variable data rate is a function of the transmission quality afforded by said first fixed bandwidth information channel, and wherein, prior to the transmission of said information between said field transceiver node and said base transceiver node, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said first fixed bandwidth information channel;
transmitting, from said base transceiver node to said application node, a signal indicative of the present variable data rate at which information is being transmitted between said field transceiver node and said base transceiver node via said first fixed bandwidth information channel; and
varying the data rate at which information is transmitted between said application node and said base transceiver node via a second fixed bandwidth information channel as a function of said received signal indicative of said variable data rate of transmission between said field transceiver node and said base transceiver node, wherein, prior to the transmission of said information between said application node and said base transceiver node, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said second fixed bandwidth information channel.
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Accused Products
Abstract
A communication method wherein rate of information transfer with a given signal transmitted or received at a transceiver node is dynamically varied as a function of the relative quality of the transmission environment. The method employs a responsive buffering process 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 having a variable error correction bandwidth and a fixed bandwidth data stream.
32 Citations
12 Claims
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1. A method for transmitting information within a communication system comprising an application node, a base transceiver node and a field transceiver node;
- said method comprising the steps of;
transmitting information between said field transceiver node and said base transceiver node at a variable data rate via a first fixed bandwidth information channel, wherein said variable data rate is a function of the transmission quality afforded by said first fixed bandwidth information channel, and wherein, prior to the transmission of said information between said field transceiver node and said base transceiver node, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said first fixed bandwidth information channel; transmitting, from said base transceiver node to said application node, a signal indicative of the present variable data rate at which information is being transmitted between said field transceiver node and said base transceiver node via said first fixed bandwidth information channel; and varying the data rate at which information is transmitted between said application node and said base transceiver node via a second fixed bandwidth information channel as a function of said received signal indicative of said variable data rate of transmission between said field transceiver node and said base transceiver node, wherein, prior to the transmission of said information between said application node and said base transceiver node, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said second fixed bandwidth information channel. - View Dependent Claims (2, 3)
- said method comprising the steps of;
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4. A method for transmitting information within a communication system comprising an field transceiver node, an base transceiver node and an application node;
- said method comprising the steps of;
transmitting information between said field transceiver node and said base transceiver node at a variable data rate via a wireless fixed bandwidth information channel, wherein said variable data rate is a function of the transmission quality afforded by said wireless fixed bandwidth channel, and wherein, prior to the transmission of said information between said field transceiver node and said base transceiver node, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said wireless fixed bandwidth information channel; transmitting, from said base transceiver node to said application node, a signal indicative of the present variable data rate at which information is being transmitted between said field transceiver node and said base transceiver node via said wireless fixed bandwidth information channel; and varying the rate at which information is transmitted between said application node and said base transceiver node as a function of said received signal indicative of said present variable data rate for transmissions between said field transceiver node and said base transceiver node. - View Dependent Claims (5, 6, 7)
- said method comprising the steps of;
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8. A method for transmitting information within a communication system comprising:
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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 fixed bandwidth channel; said method comprising the steps of; transmitting information between said wireless field transceiver and said base transceiver at a variable data rate via said first channel, said variable data rate being a function of the transmission quality afforded by said first channel, wherein, prior to the transmission of said information between said wireless field transceiver and said base transceiver, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said fixed bandwidth of said first channel; transmitting, from said base transceiver to said remote data base, a signal indicating the present variable data 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 data rate determined as a function of said present variable data rate of transmission between said wireless field transceiver and said base transceiver, wherein, prior to the transmission of said information between said remote data base and said base transceiver, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said fixed bandwidth of said second channel. - View Dependent Claims (9, 10, 11)
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12. A method for transmitting information within a communication system comprising:
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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 fixed bandwidth 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 fixed bandwidth 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 data rate via one of said separate fixed bandwidth channels, wherein the particular variable data rate for transmissions via each of said separate fixed bandwidth channels is a function of the transmission quality afforded by each separate fixed bandwidth channel, and wherein, prior to the transmission of said information between at least one of said plurality of wireless field transceivers and at least one of said plurality of base transceivers, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by each of said separate fixed bandwidth channels; 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 fixed bandwidth channel, a signal indicating the present variable data 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 data rate determined as a function of said present variable data rates for transmissions between said plurality of field transceivers and each of said base transceivers, wherein, prior to the transmission of said information between at least one of said plurality of remote data bases and at least one of said plurality of base transceivers, the effective rate of said variable data rate information is elevated via bitstuffing or reduced via buffering to match the transmission rate supported by said second fixed bandwidth channel.
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Specification