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Questions tagged [umts]

Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular technology for networks based on the GSM standard.

UMTS (Universal Mobile Telecommunications System) is a third generation mobile cellular technology for networks based on the GSM standard. Developed by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the International Telecommunications Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology.

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eCGI and CGI for LTE and GSM networks

I'm trying to determine the CGI (the Cell Global Identifier) the UE is connected to. From the 3GPP specs, it's defined as follows: 3G: CGI = PLMN-ID + LA code + CID 4G: ECGI = PLMN-ID + ECI I can already get the LAC (location area code) and CID…
MikeW
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What is the difference between N1 interface and N2 interface in 5G?

In every 5G diagram, they have the N1 interface directly connected to the UE. Is it really a direct connection? or is it still going through the radio? If so what is the difference from N2?
abatjarg
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Timer T323 and fast dormancy in UMTS network

I was googling for RRC state transitions in UMTS networks and found that "whenever UE feels that there is no data left for transmission it starts a timer T323 ,upon expiration of this timer it sends a SCRI signal to end connection. On reception of…
Adi Tiwari
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Is PSC part of global Cell ID?

While on WCDMA networks getNeighboringCells() method returns a collection of PSC values (other are invalid). I guess this means that I should use rest of identifier values from current cell and PSC (Primary Scrambling Code) from neighboring cell to…
sanurss
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Trying to use the AT command with an Huawei E3531

I want to read the RSSI of my Huawei E3531. So I found some documentations that show an easy way to get those informations using the AT command. The problem is that I can't even connect to my Huawei E3531. I mean, it works really well as a modem. I…
Max Taylor
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How LTE and UMTS transition away from full-power state?

I'm trying to understand how does LTE and UMTS/HSPA+ transition away from the full power state, and what kind of resources are tied up at the tower when the radios of the mobile device are operating at full power. I've looked at Ch. 7 and 8 of High…
cnst
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Android: How to read low level network info (RSCP, EcN0, Layer 3 Signalling)?

I'm trying to create android app for measuring 2G 3G network similar to QualiPoc. I'm aware that there is basic Android API for gathering Network Info, for example: How to know Location Area Code and Cell ID in android phone However, this API is…
Emir
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getPsc() using GsmCellLocation always returns -1

I'm successfully getting GsmCellLocation and related cid and lac information but the PSC (primary scrambling code) of the serving cell is always coming back with the initialized value -1. Anyone able to get the real PSC value of the serving…
pseudozach
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Which AT commands will be helpful to get SIM data?

I want to retrive data from SIM through AT command like we get IMSI of SIM from command AT+CIMI Similarly, we can get CCID of SIM from command AT+CCID As we get all these details from SIM through AT command, i want to read elementary files of SIM…
Gazal
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Android: NeighboringCellInfo.getRssi() returning weird data for UMTS cells

According to the Android developer documentation, NeighboringCellInfo.getRssi() is specified as follows: received signal strength or UNKNOWN_RSSI if unknown For GSM, it is in "asu" ranging from 0 to 31 (dBm = -113 + 2*asu) 0 means "-113 dBm or…
user149408
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How to block a PIN on sim/uicc

I try to automate some tests, and the tests shall verify the unblocking of the pin, but to repeat the test, the pin should be blocked again. I can't find a way (except reset) to block the pin again. Even the specs like ETSI TS 102 221, mentions…
jeb
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UM mode in RLC protocol

Why UM mode in RLC protocol doesn't support re transmission.
sachin bajwan
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Getting an error while trying to send SS command using USAT application

I'm trying to have a USIM perform call forwarding (a.k.a call redirection) using the proactive command SEND SS (TS 31.111 sections: 6.4.11, 8.14, etc.). Unfortunately I keep getting an error from the network which I can't understand. I'm trying the…
NirBurner
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Simulate cellular network's behaviour on Eclipse emulator

Is there any way to simulate the behaviour of a cellular mobile network (GSM/UMTS) in the Eclipse Android emulator? More specifically: I want to develop an app to show information about the network, such as coverage level, parameters of neighbouring…
Luis Mendo
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Getting Tower GSM location lat lng

I would like to know a method or a way to find the location of the cell the mobile is connected to (GSM one) This is my class: package com.example.signal; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import…
Hani Alsioufi
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