Device for insertion of digital packets in a transmission channel
First Claim
1. Multiplexing device for insertion of digital packets, supplied by a plurality of different sources, in a common transmission channel having an average data rate at least equal to the sum of the average data rates supplied by the sources, comprising a packet call input unit connected to the transmission channel, wherein:
- at least some of said sources are cascaded the downstream one of said cascaded sources constituting an interface with the input unit;
each source in the cascade comprises means for generating, for each packet, an insertion priority order which is a function of the type of packet, of the number of stored packets, and of insertion rules associated with the type of packets to be transmitted; and
each cascaded source, with the exception of the most upstream source, has a routing circuit supplying at its output the highest priority among the two priorities applied to its input, and of which one corresponds to the respective source itself and the second to the upstream source located upstream.
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Abstract
The multiplexing device is for insertion of digital packets, supplied by several different sources, in a same transmission channel having an average data rate at least equal to the sum of the average data rates supplied by the sources. It comprising a packet call input unit connected to the transmission channel. The sources are cascaded and the downstream source constitutes an interface towards the input unit. Each source comprises a generator of an insertion priority order for each packet as a function of the type of packet, of the number of stored packets, and of insertion rules associated with the type of packets to be transmitted. Each cascaded source, with the exception of the most upstream source, has a routing circuit supplying at its output the highest priority among the two priorities applied to its input, and of which one corresponds to the source itself and the second to the upstream unit.
103 Citations
8 Claims
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1. Multiplexing device for insertion of digital packets, supplied by a plurality of different sources, in a common transmission channel having an average data rate at least equal to the sum of the average data rates supplied by the sources, comprising a packet call input unit connected to the transmission channel, wherein:
- at least some of said sources are cascaded the downstream one of said cascaded sources constituting an interface with the input unit;
each source in the cascade comprises means for generating, for each packet, an insertion priority order which is a function of the type of packet, of the number of stored packets, and of insertion rules associated with the type of packets to be transmitted; and
each cascaded source, with the exception of the most upstream source, has a routing circuit supplying at its output the highest priority among the two priorities applied to its input, and of which one corresponds to the respective source itself and the second to the upstream source located upstream. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- at least some of said sources are cascaded the downstream one of said cascaded sources constituting an interface with the input unit;
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8. Multiplexing device for insertion of digital packets, supplied by a plurality of different sources, in a common transmission channel having an average data rate at least equal to the sum of the average data rates supplied by the sources, comprising a packet call input unit connected to the transmission channel, wherein:
- all said sources are cascaded, the downstream one of said cascaded sources constituting an interface with the input unit;
each source in the cascade comprises means for generating, for each packet, an insertion priority order which is a function of the type of packet, of the number of stored packets, and of insertion rules associated with the type of packets to be transmitted; and
each cascaded source, with the exception of the most upstream source, has a routing circuit supplying at its output the highest priority among the two priorities applied to its input, and of which one corresponds to the respective source itself and the second to the upstream source located upstream.
- all said sources are cascaded, the downstream one of said cascaded sources constituting an interface with the input unit;
Specification