Data communication system, data transmission apparatus, data...

Details Data communication system, data transmission apparatus, data... Data communication system, data transmission apparatus, data...

2007-05-10

2009-08-18

Levitan, Dmitry (Department: 2416)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

Reexamination Certificate

active

07577093

ABSTRACT:
A system allows data transfer in which the most appropriate packet processing is executed according to the performance of a terminal. A data transmission side stores scalable-encoded data in a packet as a payload, assigns priority-level information corresponding to a layer level of the encoded data stored in the packet to a packet header, and transmits the packet. A data receiving side performs processing by referring to the priority-level information. A level of priority dependent on an application is specified in an RTP payload header according to the degree of importance of scalable-encoded data, and a level of priority is further specified in an IP header. The most appropriate packet processing based on the performance of a terminal is allowed. Re-transmission control based on the layer level of encoded data is also allowed.

REFERENCES:
patent: 2002/0104092 (2002-08-01), Arai et al.
patent: 2002/0180756 (2002-12-01), Lee et al.

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