The development of a land mobile communication system, MCS-L2 which is Japan's second-generation analog cellular system is presented. The system operates in the 800-MHz band, and service commenced in May 1988 by overlaying it on the first-generation system, MCS-L1, sharing the 15-MHz*2 frequency resources. The field trial results are described.

The MCS-L1 was the first cellular system in Japan, which was developed and operated by NTT. The system operates in the 800 MHz band. The channel bandwidth is 25 kHz and the signaling is at 300 bps.

The standby and transmitting time of the MSS in battery operation was drastically improved as against the conventional MSS by thorough reduction of component current drain and application of intermittent reception. The sets have worked well in Tokyo's high-capacity system (MCS-L2) and over the whole area of Japan (MCS-L1). >

2012年6月5日 · Japan deployed the first commercial cellular phone system in 1979 with the NTT (MCS-L1) standard based on AMPS, but at a higher frequency and with voice channels of slightly lower bandwidth. Europe also developed a similar standard to AMPS called the Total Access Communication System (TACS), which operates at a higher frequency and with smaller ...

In 1979, Japan launched the world’s first commercial cellular system named MCS, which was developed and operated by NTT. The initial standard, MCS-L1, was designed to operate in the 800 MHz frequency band.

–in Japan as MCS-L1 • Formally retired in 2008 • First system to (explicitly) implement cellular design and frequency reuse • Analogue system, designed primarily for mobile voice communication • Large sized cells (10-20Km across) relative to later digital systems • But smaller compared to older systems (e.g., IMTS from 1960s)

它在英国被称作tacs，在日本被称作mcs-l1。 在AMPS中，地理上的区域被分成单元Cell，一般为10km一0km的范围，每个单元使用一套频率。 使AMPS容量增大的关键思想是利用相对较小的单元，并且重用附近（不是邻接）单元的传送频率。

The control algorithms are proposed for intermittent operation of Nippon Telegraph and Telephone Corporation's (NTT's) new land mobile communication system, NTT-MCS-L2, and the existing system, NTT-MCS-L1.

AMPS (Advanced Mobile Phone System), invented by Bell Labs and first installed in the United States in 1982. It was also used in England, where it was called TACS, and in Japan, where it was called MCS-L1. In all mobile phone systems, a geographic region is divided up into cells, which is why the devices are sometimes called cell phones.

Abstract: The control algorithms are proposed for intermittent operation of Nippon Telegraph and Telephone Corporation's (NTT's) new land mobile communication system, NTT-MCS-L2, and the existing system, NTT-MCS-L1. The power saving effect of intermittent operation is calculated for each system, and experiments are carried out using a prototype ...