Factors Affecting Throughput in LTE :- Low mcs, Low sinr, Low rsrq , high prb usage, wrong earfcn Definition, no Carrier aggregation ör missing ca configuration, Pci , Route sequence index collision, Wrong tac planning, gateway security problem, etc. air quality (now sinr, rsrq, etc etc), modulation level. For example, 16QAM, 64QAM, etc. Low Throughput Issue:- 1 - Poor coverage (BLER) 2 - Availability issue 3 - Uplink Interference 4 - A poor RACH decoding SR 5 - High error on S1 link. 6 - Delay on S1 link towards MME & SGW. 7 - Accessibility issue. 8 - Handover failure. 9 - Lack of PRBs. 10 - Problematic UE. 11 - Downlink Interference (Bad CQI) 12 - MIMO Parameters 13 - High VSWR 14 - High radio errors or instability issue. 15 - Maximum number of RRC connections active per cell 16 - Maximum number of users per TTI supported per cell. 17 - Core network, MME/SGW, etc 18 - Transmission instability & bottleneck. 19 - Incorrect parameter setting. 20 - Badly tuned handover parameters...
First Point Group is recruiting on behalf of a client, a leading-edge technology industry, who is looking for a Senior RF Performance Test Engineer.
My client is expanding rapidly in the OpenRAN /5Garea – the environment is similar to a start-up one (in R&D setting).
You will be called upon to design and develop embedded software applications and drivers for the OpenRAN 5G and 4G mMIMO radio platforms.
Location: Dallas Metro area
US Citizen and Green cardholder – will consider H1B transfer
Interview process: (1) quick call with hiring manager, (2) panel interview with SME(s), (3) HR talk
Job Description:
=============
> Preferred 5+ years of experience in real-time, embedded software development
> Must have working experience of real-time, embedded Linux kernel and device drivers
> Direct experience with radio software development is preferred
> Possess working knowledge of ARM, RISC processor architecture will be a plus
> Experience with a diagnosis of system issues at hardware, kernel and application software level
> Experience with software profiling and optimization techniques
> Strong coding skills in C, C++, Python, and shell scripting
> Experience with Agile development environment
* A plus for the following *
> Experience with Continuous Integration framework is a plus
> Knowledge of radio systems and mobile networks, especially on 3GPP LTE 4G and 5G standards is a plus
> Knowledge of OpenRAN architecture and protocols
** Personality traits/motivation **
> A curious minded person striving for continuous learning and innovation
> Outstanding verbal and written communication skills
> Ability to quickly grasp and adapt to new technologies and concepts.
Please DM me directly or share your CV to sshen@firstpointgroup.com
Comments