4G RAN Specialist
1 week ago
Mavenir is seeking a skilled 4G RAN Specialist to support initial compliance and ongoing preparation, testing, and monitoring of conformance to established quality assurance processes and standards for company products, services, and processes.
Key Responsibilities
- Develop thorough and in-depth test plans for testing LTE/5G eNodeB functionalities based on 3GPP standards, architectural, and design documents.
- Build test setups as per the requirements of the test case.
- Execute test cases and validate the test status based on the expectations for the test case.
- Understand system logs, test tool logs, and use this understanding for debugging issues and identifying accurate root causes for problems seen on the system under test or in the network.
- Identify overall improvements and enhancements possible on the system using test expertise.
- Debug field data and identify potential problems, re-creating the same in the lab.
- Perform log analysis, performance, capacity, and soak testing.
Job Requirements
Good knowledge of E2E system architecture of LTE/5G RAN.
A self-starter who likes debugging complex issues and takes pride in finding issues on the device under test.
Knowledge of Virtualization/K8S/Cloud and Radio products.
Thorough understanding of 3GPP specs covering PHY, MAC, PDCP, RLC, RRC, S1AP protocols.
Understanding of NBIOT, LTEM, and NTN networks is a plus.
Hands-on work experience of testing LTE eNodeBs.
Hands-on experience in using test tools including but not limited to UE simulators like TM500, UE debuggers like QXDM, delay simulators such as RLS2100, application traffic generators like iPerf, TeraVM, Diversifeye.
Knowledge of message flows and parameters used in the messages for LTE/5G procedures.
Understanding of different LTE/5G Releases and features.
Familiarity with LTE/5G SON functionalities is desirable.
Familiarity with application layer optimizations; UDP, TCP traffic optimization, Video traffic optimization, etc.
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