Category Archives: Telecommunication Concept

Fem to Cell Verizon How it Works and Device

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Before we talk about fem to cell verizon. For you who dont know what is the fem to cell, here is fem to cell definition from wikipedia. In telecommunications, a fem to cell is a small cellular base station, typically designed for use in a home or small business. It connects to the service provider’s network via broadband (such as DSL or cable); current designs typically support 2 to 4 active mobile phones in a residential setting, and 8 to 16 active mobile phones in enterprise settings.

What customer will get from fem to cell is Consumers benefit from improved coverage and potentially better voice quality and battery life. Some of you may be interest about How Does Femtocell Work. Here is good image to explain how fem to cell work. Continue reading →

Telecommunication Concept: High Speed Packet Access

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When we talk about HSPA(High Speed Packet Access) we talk about how technology combine between HSDPA(High Speed Downlink Packet Access) with HSUPA(High Speed Uplink Packet Access). This technology is to improve WCDMA protocol. The next technology HSPA will be call HSPA+.

HSPA is optimize how BTS and Terminal communicate with improved protocol to optimize the usage of radio. HSPA speed can go through 14Mb/s for downlink and 5.8Mb/s for uplink. The speed it self can improve until 5 times for downlink and twice for uplink compare with the previous version of WCDMA technology. Continue reading →

How Location Update in Telecommunication Network Works

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Hi all! Today we will talk about location update in wireless telecommunication technology. One BTS can only cover 12 km, for example in CDMA2000 1x EV-DO, how if one moving more than 12 km and get the wireless signal from another BTS. May be you want to know what happening in your phone and in telecommunication carrier. In this post I will share how location update going and what is happen with your SIM card and Telecommunication carrier. Continue reading →

Complete End to End Call Flow of Short Message Service(SMS)

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 Hi at this post we will talk more about Short Message Service(SMS), this come start from 2G technology, but until now it still use widely by mobile users. When you send the SMS have you think about how it can delivered to your friend? We will talk about it in this post with quite detail flow of short message service.
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  Complete End to End Call Flow of Short Message Service(SMS)

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 We will use above picture as refference.

For example,  Subscriber A(MS A) want to send Short message to subscriber B(MS B)

  1.  Then subscriber A will type the message on the phone and select subscriber B as the destination address.
  2.  After subsriber A, hit send button, MS terminal will request channel assignment to the BTS and BSC and then forward the MS A Information to MSC A Continue reading →

Call Setup Flow and Description in Telecommunication Network

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If you calling your friend that lie far away from your location, have you ever curious the flow of your call starting from you dial the phone until your friend phone ringing and answer the call? Maybe for new starter telecommunication engineer will have more curiosity than others. Ok we will take a look what happen exactly start from you dialing your phone until your friend ringing in the telecommunication network.

Here is some telecommunication term, which I will briefly explain:
MS: is your phone
BTS (Base Transceiver Station) : this is a tower to transmit and receive signaling from MS
BSC (Base Station Controller) : For controlling some BTS.
MSC (Mobile Switching Center) : it handle switching functionality, sets up and release end to end connection.
HLR (Home Location Register) : central database that contains details of each mobile phone subscriber that is authorized to use the GSM core network

Call Setup Flow and Description in Telecommunication Network

Ok Lets go to the Flow, we will use above picture as the reference.

For example Subscriber A want to call subscriber B

  1. Subscriber A dials the MSISDN of Subscriber B
  2. The signaling connection established between subscriber A to MSC-1 Continue reading →