Know more about Network communication--MCC、MNC、DBM、TAC、ECI、PCI、BAND、EARFCN、FREQ、RSSI、RSRP、RSRQ、SINR

Network communication technology and products are used in all aspects of our work and life. However, information such as relevant product technical parameters often uses professional terms or abbreviations. Many people often don't understand the meaning of some words. Let's take a closer look.

MCC
MCC: Mobile Country Code, mobile country code, MCC resources are uniformly allocated and managed by the International Telecommunication Union (ITU) and are used to uniquely identify the country to which the mobile user belongs, a total of 3 digits. China is 460.

MNC
MNC (Mobile Network Code) is used to identify the mobile network to which the mobile customer belongs, a total of 2~3 digits. In the same country, if there are multiple PLMNs, they can be distinguished by MNC.
China Mobile system uses 00, 02, 04, 07
China Unicom GSM system uses 01, 06, 09
China Telecom CDMA system uses 03, 05, Telecom 4G uses 11
China Tietong system uses 20
So, 460-00 identifies China Mobile, 460-01 identifies China Unicom, and 460-03 identifies China Telecom.

dbm
dbm is an absolute value indicating power. The larger the dBm, the better the surrounding signal, such as -76dbm>-100dbm.

TAC
TAC (Tracking Area Code): assigned by the operator, mainly serves as a unique identifier for mobile user positioning.

ECI
ECI (E-UTRAN Cell Identifier): mainly serves as a unique identifier for mobile user positioning.

PCI
The physical cell identifier of LTE is used to distinguish wireless signals from different cells to ensure that there is no identical physical cell identifier within the coverage area of ​​the relevant cell.

BAND
Band refers to a frequency range or the width of the spectrum, that is, the range between the lowest operating frequency and the highest operating frequency of the wireless decoder, in Hz. For convenience, in LTE, numbers 1-43 are used to represent different frequency bands (36101-V10.21.0 version protocol), thereby referring to different frequency ranges. Protocol 36101 specifies all current LTE frequency bands, the frequency range of the frequency band, and the LTE standard. It should be noted that the uplink and downlink frequency ranges of bands 1-32 are non-overlapping, that is, the uplink and downlink transmit data at different frequencies. This band is also called a "paired frequency band" and is reserved for FDD. The uplink and downlink frequency ranges of bands 33-43 are the same. This band is also called an "unpaired frequency band" and is reserved for TDD.

EARFCN
EARFCN: E-UTRA Absolute Radio Frequency Channel Number, absolute radio frequency channel number, represented by 16 bits, ranging from 0-65535.

FREQ
FREQ refers to the frequency MHZ used by the current network.

RSSI
RSSI represents the signal strength in a wireless network. It attenuates with increasing distance and is usually negative. The closer the value is to zero, the higher the signal strength. If the RSSI is continuously too low, it means that the uplink signal received by the base station is too weak, which may cause demodulation failure. If the RSSI is continuously too high, it means that the received uplink signal is too strong, and the mutual interference is too large, which also affects signal demodulation.

RSRP
RSRP: Reference Signal Received Power, is a measurement of the received power level in the LTE cell network. The average power is a measurement of the power received from a single reference signal. The larger the value, the better the signal.

RSRQ
RSRQ (ReferenceSignalReceivingQuality): represents the LTE reference signal reception quality. This metric is mainly used to sort different LTE candidate cells according to signal quality. This measurement is used as an input for handover and cell reselection decisions. RSRQ is defined as the ratio of N*RSRP/(LTE carrier RSSI), where N is the number of resource blocks (RBs) in the LTE carrier RSSI measurement bandwidth. RSRQ implements an effective way to report the combined effect of signal strength and interference.

SINR
SINR (Signal to Interference plus Noise Ratio): It indicates the ratio of the strength of the received useful signal to the strength of the received interference signal (noise and interference).