| Feature | GSM | UMTS(3GSM) | LTE | 5G NR |
| Technology | TDMA & FDMA | WCDMA | OFDMA | OFDMA |
| Generation | 2G | 3G | 4G | 5G |
| Encoding | Digital | Digital | Digital | Digital |
| Year of First Use | 1991 | 2009 | 2018 | |
| Roaming | Worldwide, all countries except Japan and South Korea | Worldwide | Limited | Limited |
| Handset interoperability | SIM Card | SIM Card | SIM Card | SIM Card |
| Common Interference | Some electronics, e.g. amplifiers | None | None | None |
| Signal quality/coverage area | Good coverage indoors on 850/900 MHz. Repeaters possible. 35 km hard limit. | Smaller cells and lower indoors coverage on 2100 MHz; equivalent coverage indoors and superior range to GSM on 850/900 MHz. | Smaller cells and lower coverage on S band | Dense cell on millimeter waves |
| Frequency utilization/Call density | 0.2 MHz = 8 timeslots. Each timeslot can hold up to 2 calls (4 calls with VAMOS) through interleaving. | 5 MHz = 2 Mbit/s. 42Mbit/s for HSPA+. Each call uses 1.8-12 kbit/s depending on chosen quality and audio complexity. | 20 MHz | 400 MHz |
| Handoff | Hard | Soft | Hard | Hard |
| Voice and Data at the same time | Yes GPRS Class A | Yes | No(Data only) Voice possible through VoLTE or fallback to 2G/3G | No(Data only) Voice possible through VoLTE |
-
Complete 2G KPI Optimization manual in detail with BSS Network KPI. Click on the links to view KPI Issues and their optimization. 01 GSM ...
-
LTE employs orthogonal Frequency Division Mutiple Access(OFDMA) for downlink data transmission and Single Carrier FDMA(SC-FDMA) for uplink T...
-
For Download Detail Full Speed Test Trouble shooting manual Click here If there is issue in LTE Speed Test on all the sectors of the site...
-
Read the differences between various mobile technologies being used internationally: GSM, CDMA, TDMA, EVDO, UMTS and HSPA+. They form the c...
-
LTE Radio Frames, LTE Slots and LTE Sub frames: In this topic we will learn lte frame structure, resource block in lte, lte uplink fr... -
PARAMETER DETAILS PARAMETER DETAILS Peak downlink speed 100 (SISO), 172 (2x2 MIMO), 326 ...
-
Feature GSM UMTS(3GSM) LTE 5G NR Technology TDMA & FDMA WCDMA OFDMA OFDMA Generation...
-
Following are the advantages of LTE : 1. LTE network uses all IP network architecture. Due to this fact, it is dedicated for packet switch...
No comments:
Post a Comment