The fastest in Japan!DoCoMo will start providing communication of up to 988 Mbps when receiving, over 1 Gbps next spring

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Tweets from twitter @ iPhoneMania_jp iPhone Mania May 17, 2018 00:06 Approximately 2 minutes and 53 seconds until reading NTT DoCoMo will offer a high-speed communication service on May 16th, which is the fastest in Japan at 988 Mbps for reception and 75 Mbps for transmission. From May 18th, we announced that it will be available in some areas of Tokyo, Aichi, and Osaka. It will be available on 6 Android smartphones of the summer 2018 model.

Data communication with a maximum of 988 Mbps for reception and a maximum of 75 Mbps for transmission (theoretical value) provided by NTT DoCoMo in a part of Higashi-Meihan is the fastest in Japan at the moment, and it is planned to provide a communication speed of 1 Gbps or more in the spring of 2019. It has been announced that it is. This communication speed is effective in improving and stabilizing communication speed by "carrier aggregation" that bundles three frequency bands, "256QAM" that increases the amount of data that can be carried at one time, and by increasing the number of antennas used. This is achieved by combining a technology called "4x4 MIMO" . In addition, KDDI recently announced that it will provide data communication of up to 958 Mbps when receiving.

The Android smartphone 6 models announced as the summer 2018 model support up to 988 Mbps when receiving and up to 75 Mbps when transmitting.

* Xperia XZ2 Compact SO-05K (manufactured by Sony Mobile Communications, scheduled to be released in late June) supports only up to 75 Mbps when transmitting.

NTT DoCoMo also announced that it will provide carrier aggregation "5CA" that bundles five frequencies from May. It supports a maximum communication speed of 794 Mbps (theoretical value) when receiving , and is adjusted to maximize the effective speed according to the congestion state. 5CA will be available in 776 cities nationwide at the start of the service. The following 6 models support 5CA.

According to NTT DoCoMo, the maximum communication speed of the iPhone series differs depending on the model (when receiving PREMIUM 4G).

All of the above communication speeds are theoretical values, and the actual communication speed will vary depending on conditions such as radio wave conditions and congestion. Source: NTT DoCoMo (1), (2) (hato)

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