Section 10 Radio Equipment of Fixed Stations Forming a Communication System Using Subscriber Radio Access Communication, or Radio Equipment of Radio Stations that Perform Communication, etc. for Testing Subscriber Radio Access Communication Equipment

(Radio Equipment at a Fixed Station that Performs 1,900 MHz Band Subscriber Radio Access Communication, and that Performs Communication, etc. for Testing 1,900 MHz Band Subscriber Radio Access Communication Facilities)
Article 58.2.13. Radio equipment at a fixed station that performs 1,900 MHz band subscriber radio access communication and that is connected to terminal equipment or customer-provided telecommunications facilities shall satisfy the conditions defined in the items below:
1) General conditions
a   The communication method shall be time division duplex operation using time division multiple access. The number of channels per carrier for time division multiple access and the frame configuration for time division duplex operation shall be, however, as announced separately (*) by the Minister of Public Management, Home Affairs, Posts and Telecommunications.
b The carrier sensor to be supported shall comply with the terminal conditions announced separately (*) by the Minister of Public Management, Home Affairs, Posts and Telecommunications.
c If emission is continued owing to the failure of radio equipment, the emission shall be stopped automatically before the duration of the emission reaches 60 seconds.
2) Conditions for the transmitter
a   The modulation method shall be QPSK which shifts the reference phase /4 every 2 bits.
b Modulation shall be accompanied by band limitation of 50% roll-off on the transmission side, provided that the roll-off rate is 0.5.
c When a standard coding test signal having the same transmission rate as that of a modulation signal is used for modulation, the adjacent channel leakage power radiated in a band of ±96 kHz with respect to the frequency distant from the carrier frequency by 600 kHz or 900 kHz shall be 800 nW or less, or 250 nW or less, respectively.
d While no carrier is sent during communication, the leakage power shall be 80 nW or less.
e The modulation signal shall consist of pulses, and its transmission rate shall be 384,000 bits/s (with a tolerance of 100/1,000,000). The transmission rate of a signal which consists of pulses converted from, for example, voice shall be, however, as announced separately (*1) by the Minister of Public Management, Home Affairs, Posts and Telecommunications.
f The antenna power shall be 0.08 W or less.
g The antenna shall provide an absolute gain of 22 dB or less. When the effective radiated power is equal to or lower than the value generated when an antenna power of 0.08 W is applied to an antenna with an absolute gain of 22 dB, however, this value shall be compensated for by the antenna gain.
h The frequency of emissions to be sent shall be selected automatically by sending emissions for a fixed station as the remote station.
2   Radio equipment at a fixed station for communicating with a fixed station connected to terminal equipment of customer-provided telecommunications facilities or at a radio station that performs communication, etc. for testing 1,900 MHz band subscriber radio access communication equipment shall comply with the conditions defined in the items below, as well as the conditions defined in items 1) b and c, and items 2) a to e in the previous paragraph.
1) For transmission to a fixed station connected to terminal equipment or customer-provided telecommunications facilities from a fixed station for communicating with a fixed station connected to terminal equipment or customer-provided telecommunications facilities, or for transmission to a fixed station for relaying 1,900 MHz band subscriber radio access communication from a fixed station for communicating with a fixed station connected to terminal equipment or customer-provided telecommunications facilities (excluding a fixed station for relaying 1,900 MHz band subscriber radio access communication), the communication method shall be time division duplex operation using time division multiplexing. For transmission to a fixed station for communicating with a fixed station connected to terminal equipment or customer-provided telecommunications facilities (excluding a fixed station for relaying 1,900 MHz band subscriber radio access communication) from a fixed station for relaying 1,900 MHz band subscriber radio access communication, the communication method shall be time division duplex operation using time division multiple access. The multiplex count in time division multiplexing, the number of channels per carrier for time division multiple access, and the frame configuration for time division duplex operation shall be, however, as announced separately (*) by the Minister of Public Management, Home Affairs, Posts and Telecommunications.
2) The antenna power shall be 0.16 W or less.
3) The antenna shall provide an absolute gain of 22 dB or less. When the effective radiated power is equal to or lower than the value generated when an antenna power of 0.16 W is applied to an antenna with an absolute gain of 22 dB, however, this value shall be compensated for by the antenna gain.