1. Legal source
The specifications are promulgated pursuant to Item 1, Article 42 of the Telecommunications Act.

2. Scope of application
The specifications have adopted the narrow-band terminal equipment type approval of LTE Machine Type Communications (LTE-M1) and Narrow-Band IoT (NB-IoT). According to its properties, equipment is categorized as either Frequency Division Duplex (FDD) or Time Division Duplex (TDD).
2.1 The frequency bands that are applicable to LTE-M1 terminal equipment are as follows:
2.1.1 Frequency Division Duplex (FDD):
700 MHz (uplink 703 MHz to 748 MHz; downlink 758 MHz to 803 MHz),
900 MHz (uplink 885 MHz to 915 MHz; downlink 930 MHz to 960 MHz),
1800 MHz (uplink 1710 MHz to 1785 MHz; downlink 1805 MHz to 1880 MHz), 2100 MHz (uplink1920 MHz to 1980 MHz; downlink 2110 MHz to 2170 MHz),
2500 MHz and 2600 MHz (uplink 2500 MHz to 2570 MHz; downlink 2620 MHz to 2690 MHz) frequency bands.
2.1.2 Time Division Duplex (TDD):
2500 MHz and 2600 MHz bands (2500 MHz-2570 MHz, 2570 MHz-2620 MHz and 2620 MHz-2690 MHz).
2.2 NB-IoT terminal equipment can only apply to Frequency Division Duplex (FDD) mode. The frequency bands that are applicable to NB-IoT terminal equipment are as follows:
700MHz (uplink 703 MHz to 748 MHz; downlink 758 MHz to 803 MHz),
900 MHz (uplink 885 MHz to 915 MHz; downlink 930 MHz to 960 MHz),
1800 MHz (uplink 1710 MHz to 1785 MHz; downlink 1805 MHz to 1880 MHz) and
2100 MHz(uplink1920 MHz to 1980 MHz; downlink 2110 MHz to 2170 MHz) frequency bands.

3. Technical standards
The specifications are stipulated in accordance with CNS14958-1, CNS14959, CNS13438, CNS14336-1, CNS 15598-1 and Technical Specifications for Mobile Broadband Business Terminal Equipment and other international technical specifications.

4. Definition of the terms
4.1 Narrowband terminal equipment for mobile broadband business:
Narrowband terminal equipment is divided into portable and mobile devices according to the distance to emission source; can be divided into LTE-M1 and NB-IoT terminal equipment according to the used frequency band.
4.2 Portable terminal equipment:
The emission source of the device is up to 20cm away from the human body in the normal operation mode.
4.3 Mobile terminal equipment:
The emission source of the device is more than 20cm away from the human body in the normal operation mode.
4.4 LTE-M1 terminal equipment:
Refers to terminal equipment that receives network services through the mobile broadband network; the channel bandwidth shall be no more than 1.08 MHz (including).
4.5 NB-IoT terminal equipment:
Refers to terminal equipment that receives network services through the mobile broadband network; the channel bandwidth shall be 180 kHz.

5. General testing items and eligibility criteria
5.1 Tests of this section are applicable to LTE-M1 and NB-IoT terminal equipment.
5.2 Frequency stability:
5.2.1 Under normal supply voltage, the temperature shall vary between -20℃ and 50℃. At 10 ℃ as a unit, at different temperatures, results of the measurements shall be taken in increments of 0/2/5/10 minutes; the frequency should be maintained within 0.1PPM of the main wave frequency of the channel.
5.2.2 The temperature at 20℃ and the supply voltage within ±15％ of the rating voltage value; results of the measurements shall be taken in increments of 0/2/5/10 minutes; the frequency should be maintained within 0.1PPM of the main wave frequency of the channel. If the allowable value of the operating voltage cannot reach ± 15% of the rated voltage value, please take the self-declared voltage value of manufacturers.
5.3 Specific Absorption Rate (SAR):
5.3.1 This test is applicable to portable terminal equipment.
5.3.2 SAR standard value:
5.3.2.1 Shall comply with CNS14959. The partial exposure SAR limit for devices that get close to the head and trunk during usage is 2 W/kg; the partial exposure SAR limit for devices that get close to the limb during usage is 4 W/kg.
5.3.2.2 CNS 14958-1 or IEC 62209-2 shall be adopted as the SAR measurement procedures.
5.4 Power density:
5.4.1 This test is applicable to portable terminal equipment.
5.4.2 The maximum value of power density:
0.35mW/cm^2 for frequency 700MHz;
0.45mW/cm^2 for frequency 900MHz;
0.9mW/cm^2 for frequency 1800MHz;
1.0 mW/cm? for frequency 2100MHz, 2500MHz and 2600MHz.
The measurement distance shall be 20 cm or less from the human body to the antenna declared by the device supplier.
5.5 The electromagnetic compatibility (EMC) test:
Shall comply with the standard specifications of CNS13438; devices to be tested shall be tested under the operating and idle modes (radiation disturbance) and the charging mode (conducted disturbance at the mains ports). Otherwise, tests shall not be conducted.
5.6 Electrical safety:
Shall comply with the standard regulations of CNS14336-1 or CNS15598-1.
5.7 IMEI number and unique guarantee:
5.7.1 This test is applicable to devices that required SIM in the normal operation mode.
5.7.2 The testing instrument reads and records IMEI. The applicant shall provide the unique guarantee of IMEI.
5.8 Terminal equipment featuring the charging function shall comply with charging and connection interface relevant provisions of Technical Specifications for Mobile Broadband Business Terminal Equipment.
5.9 Terminal equipment featuring the function of public warning and disaster prevention messages shall comply with Technical Specifications for Mobile Broadband Business Terminal Equipment relevant regulations.

6. Testing items and eligibility criteria for LTE-M1 terminal equipm
6.1 Tests of this section are applicable to LTE-M1 terminal equipment.
6.2 Power limits:
6.2.1 Emission power limit:
6.2.1.1 Effective radiated power (ERP)
1 W for portable terminal equipment.
2 W for mobile terminal equipment.
6.2.1.2 Conducted output power limit:
Class 3: 23 dBm +2.7/-3.2 dB.
Class 5: 20 dBm +2.7/-3.2 dB.
6.2.2 Testing methods:
6.2.2.1 When measuring the emission power, devices must be used with RMS (root mean square) equivalent voltage to measure any continuous transmission time. The measurement results shall be used to adjust the emission power based on the responding time, resolution bandwidth capability and sensitivity of the device.
6.2.2.2 Testing shall be conducted on three channels: low, medium, and high. Tests shall be undertaken on the highest level of bandwidth on each channel and shall comply with the provisions of Table 1.
6.3 Spectrum emission mask:
6.3.1 Limits of the spectrum emission mask: Shall comply with the spectrum emission mask values prescribed in Table 2.
6.3.2 Testing methods:
6.2.2.1 The spectrum emission mask limit values vary according to the bandwidth and f_00B. The resolution bandwidth (RBW) during the measurement shall not be smaller than the set values prescribed in Table 2.
6.3.2.2 Testing shall be conducted on three channels: low, medium, and high. Tests shall be undertaken on the lowest level of bandwidth, 5MHz, 10 MHz, and the highest level of bandwidth on each channel and shall comply with the provisions of Table 3.
6.4 Radiation emission limit outside the conduction band:
6.4.1 Shall comply with specification values of the out-of-band radiation with the provisions of Table 4.
6.4.2 Testing methods:
6.4.2.1 Frequency range of the out-of-band radiation measurement does not include Δf_OOB stated in 6.3.1. During the measurement, the resolution bandwidth shall not smaller than the set value with the provisions of Table 4.
6.4.2.2 Testing shall be conducted on three channels: low, medium, and high. Tests shall be undertaken on the lowest level of bandwidth on each channel and shall comply with the provisions of Table 5.
6.5 Adjacent channel leakage ratio (ACLR):
6.5.1 Shall comply with the ACLR specification values prescribed in Table 6.
6.5.2 Testing Methods:
6.5.2.1 Measure the averaged power of the testing and adjacent channels to calculate the ACLR. During the measurement, the measurement bandwidth of the channels shall adhere to specification values of Table 6.
6.5.2.2 Testing shall be conducted on three channels: low, medium, and high. Tests shall be undertaken on the lowest level of bandwidth, 5MHz, 10 MHz, and the highest level of bandwidth on each channel and shall comply with the provisions of Table 7.
6.6 Emission within non-resource blocks:
6.6.1 Shall comply with specification values of non-resource blocks as prescribed in Table 8.
6.6.2 Testing methods: Tests for the 5 MHz bandwidth shall be conducted according to Table 9.

7. Testing items and eligibility criteria for NB-IoT terminal equipment
7.1 Tests of this section are applicable to NB-IoT terminal equipment.
7.2 Power limits:
7.2.1 Emission power limit:
7.2.1.1 Effective radiated power (ERP)
1 W for portable terminal equipment.
2 W for mobile terminal equipment.
7.2.1.2 Conducted output power limit:
Class 3: 23dBm +2.7/-2.7dB.
Class 5: 20 dBm +2.7/-2.7dB.
7.2.2 Testing methods:
7.2.2.1 When measuring the emission power, devices must be used with RMS (root mean square) equivalent voltage to measure any continuous transmission time. The measurement results shall be used to adjust the emission power based on the responding time, resolution bandwidth capability and sensitivity of the device.
7.2.2.2 Tests shall be conducted according to Table 10.
7.3 Spectrum emission mask:
7.3.1 Limits of the spectrum emission mask: Shall comply with the spectrum emission mask values prescribed in Table 11.
7.3.2 Testing methods:
7.3.2.1 The spectrum emission mask limit values vary according to the bandwidth and Δf_00B. The resolution bandwidth (RBW) during the measurement shall not be smaller than the set values prescribed in Table 11.
7.3.2.2 Tests shall be conducted according to Table 12.
7.4 Radiation emission limit outside the conduction band:
7.4.1 Shall comply with specification values of the out-of-band radiation with the provisions of Table 13.
7.4.2 Testing methods:
7.4.2.1 Frequency range of the out-of-band radiation measurement does not include f_00B at 1.7MHz. During the measurement, the resolution bandwidth shall not smaller than the set value prescribed in Table 13.
7.4.2.2 Tests shall be conducted according to Table 14.
7.5 Adjacent channel leakage ratio (ACLR):
7.5.1 Shall comply with the ACLR specification values prescribed in Table 15.
7.5.2 Testing methods:
7.5.2.1 Measure the averaged power of the testing and adjacent channels to calculate the ACLR. During the measurement, the measurement bandwidth of the channels shall adhere to specification values of Table 15.
7.5.2.2 Tests shall be conducted according to Table 16.
7.6 Emission within non-resource blocks:
7.6.1 Shall comply with specification values of non-resource blocks as prescribed in Table 17.
7.6.2 Testing methods: Tests shall be conducted according to Table 18.

8. Test Requirement
Except as otherwise provided in these technical specifications, testing methods for examining emission power, out-of-band radiation emission and frequency stability shall all be processed based on the inspection requirements stated in Point 5 of the Low-power Radio-frequency Devices Technical Specifications (LPRFD Technical Requirements). The inspection procedures shall be processed in accordance of the Appendix 1 "Referential Procedures of Inspecting Transmitters" of the Low-power Radio-frequency Devices Technical Specifications.

9. Warning Labels
9.1 Warning label of the electromagnetic wave
9.1.1 Warning Content: "Please ensure to use the device properly in order to reduce the impact of electromagnetic waves"
9.1.2 Labeling: Position the label on the device properly and put labels on the package and instruction manual.
9.2 Warning label of the electromagnetic specific absorption rate (SAR)
9.2.1 Tests of this paragraph are applicable to portable terminal equipment.
9.2.2 Warning Content: "The standard value of SAR is ____W/kg; the measured value of tested product is ____ W/kg".
9.2.3 Labeling: Position the label on the device properly and put labels on the package and instruction manual.

10. The specifications shall become effective as of the date of promulgation.