telecommunication

OLAP Cube design issue for Telecommunication Data

半城伤御伤魂 提交于 2020-01-05 02:52:51
问题 Background: I’m doing analysis of call detail record (CDR) data in order to segmentify customer with respect to their call duration, time of call (holiday call or non holiday call, Business call or non Business call), age group of subscriber and gender. Data is from two table name cdr (include card_number, service_key, calling, called, start_time, clear_time, duration column) and subscriber_detail (include subscriber_name, subscriber_address, DOB, gender column) I have design OLAP as given

Mimic 3G network traffic of selected telco operator

那年仲夏 提交于 2019-12-25 02:38:14
问题 Currently, I need to perform some network communication with a mobile gateway. The mobile gateway is expecting 3G network traffic of selected telco operator. I was wondering, is there any I can mimic such traffic from my laptop? Or, from my 3G smartphone which is not subscribed to selected telco operator? The reason I ask so is selected telco is a foreign telco. Hence, it is not possible to use its sim card locally. Is there any way, or any services, for me to mimic 3G network traffic from

CRC calculating and BCH encoding [THEORY]

冷暖自知 提交于 2019-12-24 10:42:36
问题 I have question about BCH Encoding. Is BCH Encoding is the same operation like CRC remainder calculation? M(x) mod G(x) = R(x) and R(x) is my BCH code? 回答1: You are pretty much correct. To be precise, if your generator polynomial is g(x) and your block size is n , then the valid code words are the multiples of g(x) with degree < n . Lets say you have a message m(x) of degree < k , and g(x) has degree n-k : There are different ways you could turn your message into a unique valid code word. m(x

How can i detect the New outgoing call From which sim in dual sim devices?

情到浓时终转凉″ 提交于 2019-12-23 05:15:55
问题 I know that i can detect new outgoing call by this receiver : <receiver android:name=".NewOutgoingCallReceiver"> <intent-filter> <action android:name="android.intent.action.NEW_OUTGOING_CALL" /> </intent-filter> </receiver> And in OnReceive method i want to know which sim making this call ? public class NewOutgoingCallReceiver extends BroadcastReceiver { @Override public void onReceive( Context context, Intent intent ) { // here i want to check which sim is making that new call } } 回答1: The