To: Caxton Rhodes who wrote (7957 ) 3/1/2001 10:28:17 AM From: slacker711 Respond to of 197227 Results from KDDI's HDR testing....nikkeibp.asiabiztech.com KDDI's High Data Rate System Test Confirms 2.4Mbps Maximum Throughput March 1, 2001 (TOKYO) -- KDDI revealed the results of field tests of its high data rate system. HDR is the packet data communications system developed by Qualcomm Inc. of the United States for cdmaOne- and cdma2000-compatible mobile phones. It makes it possible to transfer at average speeds of 600kbps up to 2.4Mbps in the downstream direction, when data is being sent from the base station to a user's terminal, by equipping called access point (AP), a special device designed for HDR, to a base station of cdmaOne. According to KDDI, it confirmed the average throughput to be 600kbps or faster in the field test. It expects to challenge NTT DoCoMo Inc.'s IMT-2000 service, FOMA, the next-generation mobile phone standard to be launched by the end of May this year. KDDI said that it is making efforts to start HDR services sometime in 2002. The company said the HDR services are available for mobile phones, PC cards and personal digital assistant (PDA) terminals. The packet transmission fee will be an important key to promote mobile Internet, and KDDI is considering pricing at the time of HDR introduction in the form of the fixed-fee. KDDI has been conducting public field tests using two cdmaOne base stations and 32 HDR terminals in Tokyo since the end of July 2000. The main object of the test is to gauge basic performance under several conditions; users standing, walking, and while driving a car in the center of Tokyo with many buildings. The company said that the maximum transmission speed recorded was over 600kbps on average, and sector throughput was 1.2Mbps. Also, the momentary speed for sector throughput is 2.4Mbps. Sector throughput is a system's coverage capacity per sector, the fan-shaped divided area of a base station's coverage area (For KDDI, a base station can be divided into three sectors). For example, if there are ten users in one sector, therefore, the throughput per one user will result in 120kbps. The company will continue HDR field tests, verifying data in an environment equivalent to the actual usage is supposed to give. It plans to continue the test for over one year, though the plans are to complete the test by coming summer and offer HRS service as early as possible. The company already sets HDR test systems in three base stations in the suburbs of Tokyo in December 2000 and schedules to add more to be eight base stations by the end of March. At the same time, it will remove HDR systems that are set in two base stations in the center of Tokyo and operate tests mainly in the suburbs of Tokyo. HDR's specification was decided as 1x evolution-data only (1xEV-DO) by third generation partnership project 2 (3GPP2), a forum making IMT-2000 specification standard based on cdmaOne. HDR specifications under the test by KDDI was decided before the forum's decision. "We found some points to improve through the series of tests and making feedback to 3GPP2. So, we believe that with 1xEV-DO-based system adopted, the throughput will be higher," said a KDDI official. (Nikkei Communications)