Patent · US Expired

Re-use of static checksum information in header compression/decompression applications

US6820233B2 · kind B2 · utility

11Cited by

2References

33Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Ingemar Johansson · Luleå, SE
Krister Svanbro · Luleå, SE
Lars Jonsson · Västerås, SE
Hans Hannu · Luleå, SE
Stefan Håkansson · Lulekani, ZA
Mikael Degermark · Luleå, SE

Key dates

Filing date	Jan 2, 2001
Grant date	Nov 16, 2004
Priority date	—
Expiry date	Nov 9, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S370/913
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In packet communications that employ header compression/decompression, the computational complexity of checksum generation can be reduced by re-using static checksum information associated with header bits that do not change from header to header. The static checksum information can be used together with information about header bits that do change from header to header, in order to generate a desired checksum. The checksum can then be used to verify a reconstructed header produced from a compressed header by a header decompressor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.