أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
الى أي جيل من أجيال الاتصالات تتبع هذه الأنظمة : AMPS, GSM, GPRS, UMTS, LTE, LTE-A ؟
1- Advanced Mobile Phone System (AMPS), is an analog mobile cell phone : First generation.
2- Global System for Mobile communications (GSM): is a digital standatrd mobile cell phone: Second generation.
3- General Packet Radio Service (GPRS): is a packet oriented mobile data service on the2G and3G , It is often referred as2.5G (2,5 generation).
4-Universal Mobile Telecommunications System (UMTS): is one of phone mobile technology : Third generation.
5- Long Term Evolution (LTE): is initially considered a third generation standard (3.9G), as close to4G.
6- Long Term Evolution Advanced (LTE-A): is an evolution of the3GPP LTE defined by its release from10, Fourth generation.
AMPS:1G, GSM:2G, GPRS:2.5 G, UMTS:3G, HSPA:3.5G, LTE:3.9G, LTE-A:4G
AMPS =>1G
GSM and GPRS =>2G, but GPRS sometimes referred as2.5G
UMTS =>3G
LTE => initially3G when released, but then considered as a stand alone4G standard.
LTE-A =>4G
AMPS IS THE FIRST GENERATION. Gsm is the second generation.GPRS is the 2.5/2.75 generation. Umts is the 3rd generation. Lte is the 4th generation and lte-a is the 5th generation
AMPS is 1G
GSM is 2G
GPRS is 2.5 G
UMTS is 3G
HSPA is 3.5G
LTE is 3.9G,
LTE-A is 4G
AMPS 1
GSM 2
GPRS 2.5
Edge 2.75
UMTS 3
LTE 3.9
LTE-A 4
LTE-M 4.5
