316 questions
2
votes
1
answer
159
views
What is the difference between OEM_PAID and OEM_PRIVATE networks in Android [closed]
I see OEM_PAID and OEM_PRIVATE networks in android.
I see below info in PANS documentation.
OEM_PAID Used primarily for apps that can be routed on both OEM and non-OEM networks.
OEM_PRIVATE Used ...
- 41
1
vote
0
answers
54
views
How to perform SIM card geolocation using RADIUS data for 2G, 3G, and 4G?
I am trying to perform geolocation of a SIM card using cell tower data provided by the RADIUS protocol. My goal is to correctly identify the cell's (or SIM card's) location for 2G, 3G, and 4G ...
0
votes
0
answers
26
views
in Diameter Protocol Does a DRA need to show all the relevant applications or just relay application?
When creating a DRA (Diameter Routing Agent), in the CER/CEA do you need to have all the relevant Applications that the DRA allows or is the Relay Application (4294967295) enough?
I managed to get a ...
- 340
2
votes
2
answers
190
views
Does SM-DP+ has access to MNO specific keys in the eSIM realm?
As you know in the eSIM realm, for the customer model, SM-DP+ is responsible for loading the MNO provided profile into the eSIM chip; and, after loading such profile, the final end-user, can ...
- 63
0
votes
0
answers
28
views
Connection to The Things Network whit LR-FHSS
Context
I'm currently trying to connect to TTN whit LR-FHSS modulation, this is suppose to be supported by the Things Stack (Check that here), I'm using a LR1110 (this DevKit), using the LoRaWAN 1.0.4,...
- 1
0
votes
0
answers
30
views
How can we determine whether a SIM-Swap has occurred within a specific timeframe (hours/days/etc.) for a mobile user (MSISDN)?
In the context of SIM-Swap functionality, I'm seeking a method to extract the following details from DIAMETER messages interfacing with the HSS, or any network interface that offers such information:
...
0
votes
0
answers
61
views
MIMO channel Shannon Capacity
How do i add the capacity of a MIMO link with NR=2 and NT=4
clear all
clc
%Shannon capacity
snr=0;
for i = 1:10
snr = snr +2;
c=(log(1+10^(snr/10)))/log(2);
x(i)=snr;
y(i)=c;
...
0
votes
1
answer
308
views
Understanding Digit Repetition in Phone Numbers
I am currently working on a project that requires validation of phone numbers, and I'm curious about the potential repetition of a single digit within a phone number. In a typical phone number, how ...
0
votes
1
answer
88
views
Matlab 256-Qam Inphase values remains at -15 whiles the Quadrature values change
I have a vector of integers I am parsing a qam modulator in matlab using the qammod command, however I noticed when i plot the graph the quadrature part changes but the in-phase part remains at -15. ...
1
vote
0
answers
63
views
CGrateS - passing account's balance to GrantedUnit (4g)
I am using the latest version of CGrateS for my billing system and using open5gs for core system.
When updating sessions we reply with a GrantedUnit which is some constant.
For example, imagine an ...
1
vote
1
answer
384
views
Issue with message reconstruction using 16 QAM mapping in Python code
I am working on a Python code that involves message transmission and reception using 16 QAM mapping. However, I am encountering an issue where I am not getting the original message as expected.
code:
...
- 140
0
votes
0
answers
60
views
How to find the average transmitted energy per symbol (E) and Spectral Noise Density (No)?
I am trying to duplicate the Figure 3 in Matlab of the paper "Intelligent Reflecting Surface Assisted Terahertz Communications".
But, I cannot figure out how to find the values of E and No ...
- 1,270
0
votes
1
answer
60
views
Squared magnitude of the scattered field versus observation angle
I am trying to generate the figures in the paper [Intelligent Reflecting Surfaces at Terahertz Bands: Channel Modeling and Analysis][1]. Figure 2 is as below.
[![enter image description here][2]][2]
...
- 1,270
1
vote
0
answers
54
views
Is there a convention or rule used to name AAA interface in 3GPP?
Appologize if this has been answered.
I'm looking for what Gx, Gy, Cx interface stands for or What does single character mean.
Is there a convention or rule used to name AAA interface in 3GPP?
It ...
- 11
1
vote
1
answer
240
views
Is there a way to identify if the registrations on sip server are made from same application?
I am using Sip.js library to create a calling app. There seems to be times when the application registers itself multiple times, I have used ua.stop() method which serves the purpose of stopping the ...
- 11