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- Zte 3g connection manager ethio telecom code#
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- Zte 3g connection manager ethio telecom Bluetooth#
Another question, what is FDD,and TDD? As we know,BTS and MS need to communicate with each other by radio signal. One question ,what is duplex ? Simply to explain ,duplex meas Transmission and receiving.
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Compares with FDMA and TDMA, CDMA has the higest spectrum effectiveness at the present time. If we have enough codes,then we can accept more users. All users will occopy the same carrier frequecy in same time.
Zte 3g connection manager ethio telecom code#
CDMA means Code Division Multiplex Access. The 3th generation ,as we know,inculudes WCDMA\\CDMA2000\\TD-SCDMA,from these names, we can see that CDMA is the main technology in 3G.TDMA thchnology can increase frequency spectrum efficiency.in GSM system ,one carrier can support 8 users.
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That means voice is transmitted uncontinuously in time domain. The difference between FMDA and TDMA is that one section frequecy will be shared by several users.these users occupy the same carrier frequecy in different time. TDMA which means Time division multiplex access. The 2nd generation adopts TDMA technology.voice is transmitted continuously in time domain.FDMA has low spectrum effectiveness. The 1st generation uses FDMA technology, FDMA which means Frequency Division Mulitiplex Access Technology.we use frequency to identify user.Frequency will be divided into several sections.each user occupys one carrier frequency.Each carrier frequency eaquals one traffic channel.It will create new business opportunities not only for manufacturers and operators, but also for the providers of content and applications using these networks. it can provide higher data rate to transmit high quality image and video. 3G is designed for multimedia communication. EDGE of CHINA MOBILE can provide about 100kb/s data rate. For example, CHINA UNICOM ,cdma1x,it can provide 135kb/s date rate. These system can provides voice services, text message, and low speed data service. The digital systems now in use ,such as GSM ,CDMAIS-95,TDMA IS-36 are 2nd generation systems. Analog celluar systems is referred to as 1st generation systems. This picture shows the evolution of mobile communications.
Zte 3g connection manager ethio telecom license#
After all they to come up with something pretty compelling to deliver the kind of revenues the exorbitant license fees telcos shelled out will demand. We predict many anxious meeting at Orange, Vodafone and the like as its developers figure out what to bundle with 3G. All of which raises the question, which is also being discussed by operators, of why should users move to 3G if GPRS provides almost all the services they are looking for? With the development of streaming media for GPRS, functions such as video connectivity are looking less and less like a killer ap for 3G. With applications like picture messaging replacing text messaging, GPRS would be a hit in the consumer space and generate revenues for operators for at least the next three years. Older GSM technology uses circuit switching techniques which is one of the reasons early WAP services have disappointed, who packet data and an always-on GPRS connection offers access to content in a much more " elegant" way. The Symbian platform v6.1 runs within the Java 2 Platform, Micro Edition (J2ME), which makes it a suitable environment for the development of business applications.
Zte 3g connection manager ethio telecom Bluetooth#
As previously reported, last week Symbian announced the latest revision of its OS (which is called the 'packet data' release) that adds GPRS and Bluetooth support, and support for WAP 1.2.
Zte 3g connection manager ethio telecom upgrade#
" There's a lot of talk of 3G, but operators have a great opportunity to introduce services based on GPRS - which only involves changing software and an upgrade at base stations which is a far more straightforward upgrade than moving to 3G. Why we need 3G?- Why do we need 3G phones anyway? 3G services will make serious business applications, picture messaging and mobile gaming a reality.