Questions tagged [lte]

LTE - Long Term Evolution - originally, the long term evolution of the 3G wireless systems; today, refers to a specific wireless cellular system

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GSM and LTE-M connection with SIM7070G for MQTT data transmission

I am working on a tracker project using the SIM7070G modem from SIMCOM. The objective is to maximize the connection by working with both LTE-M and GSM, aiming to send location data via MQTT. I have ...
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LTE network open for all users (no AKA procedure)

I was wondering if there is some way a LTE network can operate in a way that it allows any user to connect to it without having to be registered on its HSS database. I know the normal mode of ...
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what do the two parameters SINR and RSRQ mean in 4G routers and what is the difference between them?

I want to know what do the two parameters SINR and RSRQ mean in 4G routers and what is the difference between them?
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Is GSM developed anymore?

Is the GSM standard/spesification developed anymore? Does the GSM spesification/paper get any updates anymore? Are UMTS, LTE, 5G NR versions of the GSM standard or separate standards? Of course them ...
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In LTE, which occurs first during mobile attachment: RRC Connection or NAS Procedure?

I'm digging into the LTE attachment procedure and I'm trying to understand the correct sequence of events. During the initial attachment of a mobile device to an LTE network, there appears to be some ...
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Cisco C899G LTE ISR as transparent IP router/bridge

I have a Cisco ISR router C899G with LTE Cellular interface. I'd like to bridge the LTE into one of the eth ports in order to tap the wan link into my firewall device. When I try the BVI method as ...
The amateur programmer's user avatar
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How & When does User equipment gets to know what is the SFN(system frame number) during Handover process?

Take an example: UE camps to an LTE network let's say LTE B66. Network sends RRC reconfiguration to measure the neighbor cells. UE scans & sends measurement report reporting neighbor cells. Now ...
Anton's user avatar
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A new pattern of IPv6 addresses in mobile network [closed]

When I checked the IPv6 addresses in a mobile network from the log, I found a strange IPv6 IID configuration pattern. As shown below, the common part of the IID of IPv6 addresses is :1:0:. 2401:4900:...
dianwoshishi's user avatar
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In LTE CUPS architecture, when will the SX/PFCP session establishment is triggered?

Everywhere in LTE call flow and 5G call flow, I see that Sx or PFCP session establishment is triggered upon a initial-attach from UE reaching the control-plane. My question is, PFCP or SX is node ...
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Using PBR or similar for an IP SLA for a C1111-8P-TLELA with a dynamic Cellular WAN IP

I am trying to get 4G Failover working on a Cisco C1111-8P-LTELA router. I have a known working solution that I usually use with IP SLA, and a local PBR route-map that forces traffic out of the ...
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Automatically connect to Cellular Network (LTE)

I am working on implementing a LTE configuration on IOS-XE (ISR1000) devices. Issue we have is, that we have to "genereate" some traffic in order for the cellular interface to initiate a ...
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LTE NR split throughput among different bands and carrier

Using a mobile device I can measure the throughput in download and upload while connected to an LTE and/or NR mobile cell. If I know the details of the cells to which the device is connected and so I ...
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Cellular interface in VRF (LTE)

We are testing an LTE configuration with a Cisco C1113-8PLTEEA router. We already have a wired internet connection in a specific VRF called DSL. As far as i understand the LTE backup, we do have to ...
Mario Jost's user avatar
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How are different phone/GSM operators connected with each other?

This might be a noob question, but I am having trouble finding an answer to it. Let’s say I am a new GSM operator. How would I go about connecting my network and my subscribers to the rest of the ...
Duje Lalic's user avatar
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What's the role of the AF entity in LTE network?

An AF entity is necessary, for example, to create a dedicated bearer, but I don't understand what it really does, and why is it necessary for this creation?
AMEL BENAIDA's user avatar
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How to compare two DSCP ? which one of DSCP 28 and 34 (decimal) has more priority?

How to compare two DSCP ? for example which one of DSCP 28 and 34 (decimal) has more priority ?
AMEL BENAIDA's user avatar
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Is MIMO equivalent to link aggregation?

Is MIMO the wireless version of link aggregation in wired networks? I'm not asking if MIMO is a similar link aggregation protocol like LACP or PAgP, what I'm asking is if it is the same concept as ...
Noob_Guy's user avatar
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Packet scheduling in LTE/5G core network components

Scheduling algorithms must be used on the radio side of these technologies in order to map radio sources to incoming/outgoing data packets and satisfy quality of service requirements such as latency ...
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Can you create an open LTE network?

Being an ex-politician, I've had to discuss "free city-wide Wi-Fi" many times. What I've always been thinking is, why don't we just have free 3G/4G in the city? I've some memories of being at a large ...
Mikael Dúi Bolinder's user avatar
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How ISP identifies a device on an LTE network?

I have an LTE CPE which has been provided by an ISP. When I tried to put the SIM into another device, it connected to the network but instantly got disconnected from the network. There should be some ...
Iresh Dissanayaka's user avatar
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LTE EPC Synchronization between redundant components

I am investigating resiliency in LTE Evolved Packet Core. Each EPC components has information storage as defined for each user in 3GPP TS 23.40 (Ch 5.7). In case of failure this info needs to be ...
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When LTE to UMTS IRAT handover is made, what changes occurs in MAC layer?

I have not been able to figure out any changes in MAC layer. If there doesn't occur any change then please give the reason
user3088's user avatar