PACKET BASED COMMUNICATIONS
First Claim
1. A method of generating packets for transmission over a packet based communications network, the method comprising the steps of:
- determining a “
time slice”
packet size from the link speed and the interval of time extending between the times at which packets are selected for output from a buffer to the transmission interface;
creating a network packet from frames of time-critical data generated during the interval, where the packet is synchronized to both existing timing requirements of the time-critical frames and the link speed;
then, adding non time-critical data to the network packet if its size had not exceeded the determined “
time slice”
packet size.
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Accused Products
Abstract
This invention is applicable to packet based, rate limited radio links, such as satellite or terrestrial wireless digital communications systems. These communications networks concurrently carry time-critical traffic, such as voice or multimedia, and non time-critical traffic, such as generic data traffic, between two or more communication end points. The communication end points may be connected through a number of heterogenous networks and the end to end throughput characteristics may vary over time. A first aspect of the invention concerns a method for generating packets. In other aspects the invention concerns a computer system for use in packet based communications, a computer protocol for packet based communications and a communications packet. The invention involves determining a “time slice” packet size from the link speed and the interval of time extending between the times at which packets are selected for output from a buffer to the transmission interface. It also involves creating a network packet from frames of time-critical data generated during the interval, where the packet is synchronised to both existing timing requirements of the time-critical frames and the link speed. Then, adding non time-critical data to the network packet if its size had not exceeded the determined “time slice” packet size.
120 Citations
15 Claims
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1. A method of generating packets for transmission over a packet based communications network, the method comprising the steps of:
-
determining a “
time slice”
packet size from the link speed and the interval of time extending between the times at which packets are selected for output from a buffer to the transmission interface;creating a network packet from frames of time-critical data generated during the interval, where the packet is synchronized to both existing timing requirements of the time-critical frames and the link speed; then, adding non time-critical data to the network packet if its size had not exceeded the determined “
time slice”
packet size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15)
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13. A computer system for transmitting packets on a packet based communications system, wherein:
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“
time slice”
packet size is dynamically determined from the link speed and the interval of time extending between the times at which packets are selected for output from a buffer to the transmission interface;network packets are constructed from frames of time-critical data generated during the interval, where the packets are synchronized to both existing timing requirements of the time-critical frames and the link speed;
then,non time-critical data is added to the network packet if its size had not exceeded the determined “
time slice”
packet size.
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Specification
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- Resources
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Current AssigneeNational ICT Australia Limited
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Original AssigneeNational ICT Australia Limited
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InventorsPercival, Terence Michael Paul, Boreli, Roksana
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Application NumberUS12/298,123Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current370/352CPC Class CodesH04L 65/1101 Session protocolsH04L 65/70 Media network packetisationH04L 65/80 Responding to QoSH04L 69/04 Protocols for data compress...H04L 69/28 Timers or timing mechanisms...
