Ericsson Compression Technology Boosts 3G Network Capacity.Business Editors STOCKHOLM, Sweden--(BUSINESS WIRE)--May 8, 2002 Ericsson (NASDAQ NASDAQ in full National Association of Securities Dealers Automated Quotations U.S. market for over-the-counter securities. Established in 1971 by the National Association of Securities Dealers (NASD), NASDAQ is an automated quotation system that reports on :ERICY) has closed the circle from the initial idea to verification by hosting a successful Robust Header Compression, ROHC ROHC Robust Header Compression (IETF) , interoperability test recently in Sweden. ROHC means performance gains of typically 50 percent for IP based services in all 3G systems. Robust header compression, ROHC, will be used in all 3G cellular systems (WCDMA (Wideband CDMA) A 3G high-speed digital data service provided by cellular carriers that use the TDMA or GSM technology worldwide, including AT&T (formerly Cingular) and T-Mobile in the U.S. , EDGE and, CDMA (Code Division Multiple Access) A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology from QUALCOMM that operates in the 800 MHz band and 1.9 GHz PCS band. 2000), substantially improving spectrum efficiency and service quality for IP services such as voice or video in Mobile Internet. ROHC has been included in 3GPP GPP Government Performance Project GPP General Purpose Processor GPP General Physical Preparedness GPP Gambian People's Party GPP Good Pharmacy Practice GPP Gross Primary Productivity GPP Green Procurement Program GPP Generic Packetized Protocol specifications and is a new Internet Engineering Task Force (IETF See Internet Engineering Task Force. IETF - Internet Engineering Task Force ) proposed standard, developed to increase efficiency over wireless links by compressing IP headers. For wireless IP services such as voice, the ROHC scheme reduces packet size by 75 percent for IPv6 while still maintaining robustness to transmission errors common on wireless links. Ericsson has pioneered in this field, proposing a solution and driving the standards process. In collaboration with Lulea University of Technology in Sweden, Ericsson presented the first robust header compression scheme called ROCCO ROCCO Robust Checksum-Based header Compression to the IETF in June 1999. In July 2000, Ericsson and Japan Telecom successfully completed the world's first field trial of Voice over IP over WCDMA, using ROCCO. The ROCCO scheme provided a major contribution to today's ROHC standard. The interoperability test was conducted together with Nokia, Siemens/Roke Manor Research, Effnet and Panasonic. The test covered the major parts of the ROHC standard including test of robustness over emulated WCDMA/3G links. Ericsson is shaping the future of Mobile and Broadband Internet communications through its continuous technology leadership. Providing innovative solutions in more than 140 countries, Ericsson is helping to create the most powerful communication companies in the world. Read more at http://www.ericsson.com/press |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion