Arrangement for the optimization of the data transmission via a bi-directional radio channel
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsWerner Dirschedl, Gerhard Greubel, Peter Maurer
Life of this patent
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Abstract
The arrangement is for optimization of data transmission via a bi-directional radio channel in which respective types of modulation can be selected at the transmitter side and the code rate of the forward error correction (FEC) as well as the power of the transmitter Devices (CRC) are provided at the reception side for determination of the error rate. The size of the data packets, and/or the type of modulation, and/or the code rate, and/or the power of the transmitter is varied, dependent on the error rate transmitted back, such that a predetermined error rate is achieved at the reception side.
Claims7
An arrangement for optimizing data transmission in data packets via a bi-directional channel, comprising:
- a modulation selection unit for selecting modulation types at a transmitter side of the channel;
- a code rate setting unit for setting a code rate of a forward error correction;
- a power setting unit for setting a power of a transmitter at the transmitter side;
- a packet size setting unit for setting a size of data packets at the transmitter side of the channel;
- an error rate device at a reception side of the channel for determining an error rate in the data transmission;
- and
- a device at the transmitter side for varying at least a size of the data packets with the packet size setting unit and the type of modulation with the modulation selection unit both as a function of said error rate transmitted back from the reception side so that a predetermined error rate is achieved at the reception side.
A method for optimizing data transmission via a bi-directional channel wherein data is transmitted in data packets, comprising the steps of:
- providing a first setting variable for setting a size of the data packets at a transmitter side of the bidirectional channel;
- providing a second setting variable for setting a modulation process at the transmitter side of the bidirectional channel;
- transmitting data in the channel from a transmission side to a reception side using said data packets;
- determining an error rate at the reception side and transmitting the error rate back to the transmitter side;
- and
- determining as a function of the error rate the first and second variables in order to improve transmission quality.
Dependencies are inferred from the claim text.