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
Is there an upper limit on the number of Re-Transmission in HARQ in 5G
I am working on a 5g project, and in order to understand 5G, I need to understand the Physical layer HARQ properly. I am thinking of limiting the number of retransmissions by HARQ and checking the ...
Map Gx to PFCP message
I read the specs and all docs but didn't manage to find out how to map default QoS and APN QoS from Gx (Diameter) to Sx (PFCP). TS29.244 - 5.4.4 says: QoS control refers to the authorization and ...
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:...
What is the role of utility function of user equipment in base station scheduling?
In a paper on 4G base station bandwidth scheduling among user equipment,it is said that sigmoidal like utility function with appropriate parameters approximate VoIp traffic and adaptive real time ...
Can td-lte guarantee bandwidth?
My ISP claims that since td-lte has time division within its full form, it technically cannot have any sort of guarantees on its bandwidth. How true is that? As far as I have read through pages like ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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?
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 ?
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 ...
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 ...
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 ...
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 ...
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 ...
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