-
Notifications
You must be signed in to change notification settings - Fork 3
Glossary
Automatic Neighbor Relation (ANR) is a procedure for a cell to detect neighboring cells. A cell performs ANR by instructing UEs to detect and measure the cells around them and report back their results.
Further reading: https://www.sharetechnote.com/html/Handbook_LTE_ANR.html
The oldest cell network still widely used, AKA 2G. Only supports calling/texting, but in 2.5G data was introduced.
Improved on GSM by having faster data rates and some improved security. AKA UMTS or CDMA2000.
Broadcast Control Channel
Dedicated Control Channel
Shared Channel
Multimedia Broadcast Multicast Service
Paging Control Channel
Long-Term Evolution standard. Offers significant improvements to 3G in security and performance. AKA 4G or WiMax.
Next-generation standard, aka 5G New Radio.
In GSM, Location Area Codes are IDs given to individual Location Areas.
In 4G, Tracking Area Codes are IDs given to individual Tracking Areas.
E-UTRA Absolute Radio Frequency Channel Number is a carrier frequency identifier ranging from 0-65535. Each EARFCN uniquely identifies an LTE band and carrier frequency.
Further reading:
Physical Cell ID is an identifier for LTE cells. The ID is designed to allow UEs differentiate between neighboring cells, minimize interference between them, and are assigned by network operators in a way to prevent collisions.
In LTE, the PCI is a 9 bit value from 0-503, and in 5G it's a 24 bit value from 0 to 1007.
Further reading:
Paging is the mechanism for a network to send data to a UE.
Further reading:
Random Access Channel is the first message from UE to eNB when you power it on.
Further reading:
The cellular radio access network (RAN) refers to the wireless portion of the network that connects the mobile phones to the core network through cells.
from [1]
Base stations are called eNodeB in LTE.
Radio Resource Control manages the connection between a phone and a base station (eNodeB) [1]
Non-Access Stratum manages the connection between a phone and the core network's MME. [1]
Mobile Management Entity manages mobility management and user authentication in 4G LTE [1].
International Mobile Subscriber Identity, connected w/ a user's SIM card
International Mobile Equipment Identity, correlated w/ a mobile device
Temporary Mobile Subscriber Identity, a more temporary type of IMSI generated by UEs
Cell Global Identity
Mobile Country Code
Mobile Network Code
System Information Blocks (SIB) are data sent by cells containing tons of different of information relevant to the UE. There's 13 types of SIBs in LTE, each with different purposes and payloads. They contain cell and administrative area identifiers, MCC and MNC, and radio channel info required for the phones to connect to the network [1].
Further reading:
- https://cafetele.com/system-information-block-lte/
- https://www.sharetechnote.com/html/Handbook_LTE_SIB.html
Signal to Interference plus Noise Ratio = (S / (N + I))
Reference Signal Received Power (RSRP). See https://www.cablefree.net/wirelesstechnology/4glte/rsrp-rsrq-measurement-lte/
Received Signal Strength Indicator (RSSI). See https://www.cablefree.net/wirelesstechnology/4glte/rsrp-rsrq-measurement-lte/
Reference Signal Received Quality. See https://www.cablefree.net/wirelesstechnology/4glte/rsrp-rsrq-measurement-lte/
User Equipment (UE) refers to a mobile device, such as a smartphone, tablet, laptop, or other wireless device that's used to access the network (https://inseego.com/resources/5g-glossary/what-is-ue/). Uniquely identified with an IMSI and IMEI.