NTT Docomo says it will offer 5MHz mobile bandwidth for 37.5Mbit/s downlinks and 12.5Mbit/s uplinks when it launches Japan’s first commercial 4G LTE service in December.
The Japanese operator said it is eventually aiming for 10MHz bandwidth throughput for maximum 75Mbit/s downlinks and 25Mbit/s uplinks in selected test areas.
NTT Docomo began verifying its commercial mobile network system based on the Long Term Evolution (LTE) protocol in the Tokyo area, this month.
The 2GHz network system comprises dual W-CDMA/LTE basestations, LTE core network equipment and LTE-enabled mobile devices.
Docomo has been installing LTE basestation components on existing W-CDMA 3G basestations which are already equipped with dual W-CDMA/LTE remote radio equipment1 can be easily upgraded for LTE service with the addition of an LTE BDE (basestation digital equipment).
The LTE devices to be used in the pre-launch operation are equipped for theoretical speeds of 100Mbit/s downlinks and 50Mbit/s uplinks.
DOCOMO Introducing Remote Radio Equipment for LTE Base Stations (December 17, 2009)
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