Packet loss tolerant reshaping method
1999 (English)Patent (Other (popular science, discussion, etc.))
NOVELTY - The method involves receiving data packets from a source. The transmission time for each received data packet is calculated based on the automatic repeat request (ARQ) sequence number of the received data packet and peak packet rate (PR). The time intervals between data packets, transported in a local area network (LAN) system with data link control (DLC) layer, are then restored. USE - For reshaping streams of data packets or cells in a communications network. ADVANTAGE - Restores or maintains proper time intervals between packets of cells in a stream to efficiently and effectively detect and handle situations where one or more packets are lost or discarded. Ensures that output stream of packets or cells from DLC reshaper is not slipped or shifted in phase and does not include jitters. Determines specific transmission times for packets or cells in the stream based on peak cell rate (PCR), ARQ sequence numbers and reference time e.g. transmission time or first packet or cell. Improves performance of synchronous application e.g. codec, and copes with packet loss by repeating preceding packet or inserting background noise in output stream in lieu of lost packet. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for the LAN system with DLC layer. DESCRIPTION OF DRAWING(S) - The figure shows the DLC reshaper in a wireless asynchronous transfer mode (WATM) network.
Place, publisher, year, edition, pages
Telecommunications Communication Systems
IdentifiersURN: urn:nbn:se:kth:diva-74227ISI: 2001265611OAI: oai:DiVA.org:kth-74227DiVA: diva2:489343
US 6490254 B1 (2002-12-03)
EP 1197044-B1 (2006-12-06)2012-02-022012-02-022013-08-09Bibliographically approved