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Suppression of disturbances, caused by burst-like changes of the data rate, during synchronous radio transmission

A wireless transmission and transmission device technology, applied in data exchange network, data exchange through path configuration, digital transmission system, etc., can solve the problem of large number of time synchronization points

Active Publication Date: 2008-11-12
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, as described above, the possible error in decentralized network events is not critical, since long data packets indicate that long pauses between individual data packet transmissions are possible, so the number of possible time synchronization points is also corresponding large, the resulting effects are then correspondingly more severe than those in the Bluetooth standard 1.1

Method used

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  • Suppression of disturbances, caused by burst-like changes of the data rate, during synchronous radio transmission
  • Suppression of disturbances, caused by burst-like changes of the data rate, during synchronous radio transmission

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Embodiment Construction

[0037] The transmission of data packets via the air interface is schematically illustrated in FIGS. 1A and 1B , in this case each data packet having a length of 30 values ​​is transmitted during the connection delay time for the time synchronization point of the data packet transmission Each of is redefined at the time points marked with letters A and B in FIGS. 1A and 1B . The redefinition of the time synchronization point means that following the redefinition of the time synchronization point and the individual time intervals in which no data packets are transmitted are not of normal length. In the case illustrated in Figure 1A, this interval is shortened due to the recalculation of the time synchronization points, whereas in Figure 1B the corresponding interval is lengthened, in the earlier mentioned case this produces a brief spike in data rate, in the latter mentioned At the same time, the bottom of the data rate is generated.

[0038] Fig. 2 shows a block diagram of a r...

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Abstract

In a receiving device ( 1 ) and method for reception of data packets by radio, having a memory ( 4 ), values derived from the values of received data packets are entered and values are emitted for further processing from it. The device comprises a regulating unit ( 6 ) for regulating the filling level of the memory ( 4 ) at a nominal filling level, with the regulating unit ( 6 ) controlling the number of values entered in the memory ( 4 ) per received data packet as a function of the filling level. The invention also relates to correspondently designed transmitter.

Description

technical field [0001] Suppression of disturbances caused by burst-like changes in data rate during simultaneous radio transmissions. Background technique [0002] The invention relates to a receiving device and a transmitting device for wireless transmission of data packets, and the receiving device and the transmitting device have special equipment for suppressing disturbances caused by burst changes in data rate during synchronous transmission, The invention also relates to corresponding methods. [0003] Synchronous data is transmitted in packets in a wireless data transmission system, such as a Bluetooth system. Different data packets with different lengths can be used for synchronous transmission at a specific data rate. The phrase synchronous transmission of data packets means that data packets are transmitted at a fixed data rate and beyond Data transmissions that are periodically transmitted in the form of predetermined data packets, with equal intervals between su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/28
CPCH04L12/2854
Inventor F·赫特根P·阿斯彻尔
Owner APPLE INC
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