Method for improving the data transmission quality in data packet oriented communication networks
First Claim
1. A data transmission method with improved transmission quality, the method which comprises:
- transmitting a first data stream at a predetermined data rate from a transmitter via a network node in a data packet oriented communication network to a receiver;
forwarding data of the first data stream from the network node together with data from at least one further data stream and, if a transmission capacity that is jointly available for the data streams is exceeded, rejecting data packets in the data streams to be transmitted by the network node;
adding redundant data to the first data stream with the transmitter and thereby increasing a redundancy and increasing a data rate of the first data stream arriving at the network node in relation to a data rate of the at least one further data stream, and to thereby cause a greater proportion of the jointly available transmission capacity to be taken up by the data of the first data stream;
determining, in the receiver, from the first data stream a measure for a transmission quality thereof;
transmitting with the receiver an acknowledgement to the transmitter depending on the determined measure for the transmission quality; and
adding redundant data to the first data stream with the transmitter depending on the acknowledgement.
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Accused Products
Abstract
The transmission quality of a first data stream, in particular a real time data stream, which competes with at least one further data stream for a restricted transmission capacity at a network node in a data packet oriented communication network, is improved by increasing the data rate of the first data stream by adding redundant data at the transmitter end. During an overload situation, the increase in the data rate of the first data stream in comparison to that of the at least one further data stream overrides the latter to the extent that a greater proportion of the jointly available transmission capacity at the network node is now taken up by the first data stream.
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Citations
10 Claims
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1. A data transmission method with improved transmission quality, the method which comprises:
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transmitting a first data stream at a predetermined data rate from a transmitter via a network node in a data packet oriented communication network to a receiver; forwarding data of the first data stream from the network node together with data from at least one further data stream and, if a transmission capacity that is jointly available for the data streams is exceeded, rejecting data packets in the data streams to be transmitted by the network node; adding redundant data to the first data stream with the transmitter and thereby increasing a redundancy and increasing a data rate of the first data stream arriving at the network node in relation to a data rate of the at least one further data stream, and to thereby cause a greater proportion of the jointly available transmission capacity to be taken up by the data of the first data stream; determining, in the receiver, from the first data stream a measure for a transmission quality thereof; transmitting with the receiver an acknowledgement to the transmitter depending on the determined measure for the transmission quality; and adding redundant data to the first data stream with the transmitter depending on the acknowledgement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a data transmission method of the type in which a first data stream of a given data rate is transmitted in a data packet oriented communication network from a transmitter, via a network node, to a receiver, and the first data stream is to be passed on from the network node together with at least one further data stream, and wherein, if a transmission capacity that is jointly available for the data streams is exceeded, the network node rejects data packets in the data streams to be transmitted, the improvement which comprises:
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adding redundant data to the first data stream to thereby increase a redundancy and to increase a data rate of the first data stream arriving at the network node relative to a data rate of the at least one further data stream, and to thereby take up a greater proportion of the jointly available transmission capacity with data of the first data stream relative to data of the at least one further data stream and to thereby improve a transmission quality of the first data stream; determining, in the receiver, from the first data stream a measure for a transmission quality thereof; transmitting with the receiver an acknowledgement to the transmitter depending on the determined measure for the transmission quality; and adding redundant data to the first data stream with the transmitter depending on the acknowledgement.
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Specification