3 Definitions, symbols, and abbreviations
25.1423GPPBase Station (BS) conformance testing (TDD)Release 17TS
3.1 Definitions
Ancillary RF amplifier: a piece of equipment, which when connected by RF coaxial cables to the BS, has the primary function to provide amplification between the transmit and/or receive antenna connector of a BS and an antenna without requiring any control signal to fulfil its amplifying function.
BS RF bandwidth: The bandwidth in which a Base Station simultaneously transmits and/or simultaneously receives multiple carriers within each supported operating band.
BS RF bandwidth edge: The frequency of one of the edges of the Base Station RF bandwidth
Bit Error Ratio: The Bit Error Ratio is defined as the ratio of the bits wrongly received to all data bits sent. The bits are the data bits above the convolutional/turbo decoder. The BER is the overall BER independent of frame erasures or when erased frames are not defined.
Block Error Ratio: A Block Error Ratio is defined as the ratio of the number of erroneous blocks received to the total number of blocks sent. An erroneous block is a Transport Block whose cyclic redundancy check (CRC) is wrong.
Power Spectral Density: The units of Power Spectral Density (PSD) are extensively used in this document. PSD is a function of power versus frequency and when integrated across a given bandwidth, the function represents the mean power in such a bandwidth. When the mean power is normalised to (divided by) the chip-rate it represents the mean energy per chip. Some signals are directly defined in terms of energy per chip, (DPCH_Ec, Ec, and P-CCPCH_Ec) and others defined in terms of PSD (Io, Ioc, Ior and Îor). There also exist quantities that are a ratio of energy per chip to PSD (DPCH_Ec/Ior, Ec/Ior etc.). This is the common practice of relating energy magnitudes in communication systems.
It can be seen that if both energy magnitudes in the ratio are divided by time, the ratio is converted from an energy ratio to a power ratio, which is more useful from a measurement point of view. It follows that an energy per chip of X dBm/3,84 MHz can be expressed as a mean power per chip of X dBm. Similarly, a signal PSD of Y dBm/3,84 MHz can be expressed as a signal power of Y dBm.
Mean power: When applied to a CDMA modulated signal this is the power (transmitted or received) in a bandwidth of at least (1+ ) times the chip rate of the radio access mode. The period of measurement shall be a transmit timeslot excluding the guard period unless otherwise stated.
NOTE: The roll-off factor is defined in section 6.8.1.
RRC filtered mean power: The mean power as measured through a root raised cosine filter with roll-off factor and a bandwidth equal to the chip rate of the radio access mode.
NOTE: The RRC filtered mean power of a perfectly modulated CDMA signal is 0.246 dB lower than the mean power of the same signal.
Code domain power: That part of the mean power which correlates with a particular (OVSF) code channel. The sum of all powers in the code domain equals the mean power in a bandwidth of (1+ ) times the chip rate of the radio access mode.
Highest Carrier: The carrier with the highest carrier centre frequency transmitted/received in a specified operating band.
Inter RF bandwidth gap: The frequency gap between two consecutive RF bandwidths that are placed within two supported operating bands respectively.
Multi-band Base Station: Base Station characterized by the ability of its transmitter and/or receiver to process two or more carriers in common active RF components simultaneously, where at least one carrier is configured at a different non-overlapping operating band than the other carrier(s).
Multi-band transmitter: Transmitter characterized by the ability to process two or more carriers in common active RF components simultaneously, where at least one carrier is configured at a different non-overlapping operating band than the other carrier(s).
Multi-band receiver: Receiver characterized by the ability to process two or more carriers in common active RF components simultaneously, where at least one carrier is configured at a different non-overlapping operating band than the other carrier(s).
Maximum radio bandwidth: Maximum frequency difference between the upper edge of the highest used carrier and the lower edge of the lowest used carrier.
Maximum BS RF bandwidth: The maximum RF bandwidth supported by a BS within each supported operating band.
Output power, Pout: The mean power of one carrier of the base station, delivered to a load with resistance equal to the nominal load impedance of the transmitter.
Lower RF bandwidth edge: The frequency of the lower of the Base station RF bandwidth, used as a frequency reference point for transmitter and receiver requirements.
Lowest Carrier: The carrier with the lowest carrier centre frequency transmitted/received in a specified operating band.
Maximum output power, Pmax: The mean power level per carrier of the base station measured at the antenna connector in a specified reference condition. The period of measurement shall be a transmit timeslot excluding the guard period.
MBSFN-only operation: Operation of a dedicated carrier solely for the purposes of MBSFN transmission. No receive functionality is implemented on the specified carrier frequency.
Rated output power, PRAT: Rated output power of the base station is the mean power level per carrier that the manufacturer has declared to be available at the antenna connector.
Rated total output power: Rated total output power of the base station is the mean power level that the manufacturer has declared to be available at the antenna connector.
Synchronized operation: Operation of TDD in two different systems, where no simultaneous uplink and downlink occur.
Total power dynamic range: The difference between the maximum and the minimum output power of the base station for a specified reference condition.
Total RF bandwidth: Maximum sum of RF bandwidths in all supported operating bands.
Upper RF bandwidth edge: The frequency of the upper edge of the Base Station RF Bandwidth; used as a frequency reference point for transmitter and receiver requirements.
Unsynchronized operation: Operation of TDD in two different systems, where the conditions for synchronized operation are not met.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
α Roll-off factor
3.3 Abbreviations
For the purposes of the present document, the following and abbreviations apply:
3GPP 3rd Generation Partnership Project
16QAM 16 – Quadrature Amplitude Modulation
AWGN Additive White Gaussian Noise
BER Bit Error Ratio
BLER Block Error Ratio
dB decibel
dBm decibel relative to 1 milliWatt
DPCHo Mechanism used to simulate an individual intracell interferer in the cell with one code and a spreading factor of 16
Ratio of the average transmit energy per PN chip for the DPCHo to the total transmit power spectral density of all users in the cell in one timeslot as measured at the BS antenna connector
EVM Error Vector Magnitude
F Frequency (of the assigned channel frequency of the wanted signal)
Fuw Frequency offset of the unwanted interfering signal from the assigned channel frequency of the wanted signal
HSDPA High Speed Downlink Packet Access
HSUPA High Speed Uplink Packet Access
HS-DSCH High Speed Downlink Shared Channel
HS-PDSCH High Speed Physical Downlink Shared Channel
IMB Integrated Mobile Broadcast
IMT-2000 International Mobile Telecommunications 2000
Ioc Power spectral density (integrated in a noise bandwidth equal to the chip rate and normalized to the chip rate) of a band limited white noise source (simulating interference from other cells) as measured at the BS antenna connector.
Îor Received power spectral density (integrated in a bandwidth (1+a) times the chip rate and normalized to the chip rate) of all users in the cell in one timeslot as measured at the BS antenna connector
IPR Intellectual Property Rights
MBMS Multimedia Broadcast Multicast Service
MBSFN MBMS over a Single Frequency Network
MC Multi-carrier
MC-HSDPA Multi-carrier HSDPA
MC-HSUPA Multi-carrier HSUPA
P Output power
Pout Output power of the base station
Pmax Maximum output power of the base station
QPSK Quadrature Phase Shift Keying
RAT Radio Access Technology
RBER Residual BER
RCDE Relative Code Domain Error
REFSENS Reference Sensitivity Level
RMS Root-Mean Square
PRAT Rated output power of the base station
RRC Root-Raised Cosine
SC Single Carrier
TC Chip duration
TC Test Configuraion
TDM Time Division Multiplexing
TS Time Slot
UTTC UTRA TDD Test Configuration
Figure 3.3-1 Illustration of maximum radio bandwidth and Total RF bandwidth for Multi-band Base Station