Qualcomm Software Engineer LTE C Real Time Embedded interview questions

I had a phone interview. The interview was tentatively scheduled through an email. I was supposed to get a confirmation of the schedule 2 days prior to the interview date but I did not get it till on the morning of the interview. I was kinda partly prepared for the interview because I thought I had more time since I did not get a confirmation. So, I would suggest that one has to be prepared (regardless of the confirmation from the staffing co-ordinator) when they receive an email or a call that their resume has been shortlisted for an interview. The interview was basically on the skills they require for the position. Since I am a new grad, most of the questions were about my course projects, my coursework and my work experience as a graduate research assistant, everything in detail. And then, he asked me questions on C, mostly 'Data Structures' (Linked Lists, Stack). He also asked me some basic questions on LTE like, What do u know about LTE, What are the channels in the LTE technology.

After applying online through the website, I received an email to schedule phone interview's date and time. The interview took about 30 minutes and from the very beginning the guy asked for pen and paper. Then he started asking about my project on LTE network optimization, after that he asked about C programming 'data structures','stack' and also he asked about some programming logic. He didn't go through my resume.