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TECHNICAL HIGHLIGHTS
RAN3 FLOURISHING
IN THIS TIME OF CHANGE
Interview with Gao Yin, 3GPP WG RAN3 Chair.
In May 2021 Gao Yin was elected Chair of RAN3, the 3GPP Working Group
responsible for looking at the RAN architecture and for the specification of protocols
for the related network interfaces.
She has attended the group’s meetings since 2007 and has served two terms as Vice-Chair, in the period immediately leading up to her
recent election to the position of Chair. Gao Yin’s employer is ZTE Corporation. She is based in Shanghai, where she Leads the RAN project
team - contributing to 3GPP specifications.
Highlights: Gao Yin, you have been active In the current Release 17 work, a new Highlights: Looking forward, is one of the
in 3GPP RAN3 for fourteen years. With study on the applications of Artificial major issues on your mind the increasing
the experience you have, can you sum up Intelligence and Machine Learning in the scale of the effort needed, and how to
the main tasks that RAN3 undertakes? RAN, led by RAN3, is also worthy of note sustain the level of output achieved -
(See the Highlights Issue 2 article on that). beyond the initial 5G Releases?
GAO YIN: RAN3 is responsible for the
development of specifications dealing
with the overall Next Generation RAN
architecture and for the interfaces “Major topics of the moment, based on the current
between RAN nodes. The standardization
of wireless network architecture plays time allocation, are Data Collection for SON/MDT,
a vital role in determining the direction NR Multicast and Broadcast Services, Integrated
of future network deployments. The
open interfaces enable different network Access and Backhaul Enhancements for NR, NR QoE
vendors to coordinate efforts towards
seamless mobility, where inter-vendor Management and Optimizations for Diverse Services”
operational requirements on wireless
telecommunications networks can be met.
Highlights: No group works alone, but GAO YIN: Increasing the scale of the
3GPP provides an international platform RAN3 does take the lead on improving the effort to meet the demands going
where innovative technologies proposed interfaces for a wide variety of topics – forward is indeed a challenge. The load of
by the industry can be studied and handling around a thousand contributions ‘Technical Enhancements or Improvement
standardized. With the standardization each meeting. What are the major topics Change Requests’ (TEI CRs) on frozen
of these technologies, the network of the moment? releases is very high in recent e-meetings
operators, manufacturers, device vendors, - about 25% of our work in on Rel-15/Rel-
industry verticals and others… are working GAO YIN: Indeed, we have a massive 16 corrections – this is a pressure point
together to drive the industry forward. number of contributions in each meeting. which needs to be alleviated with some
This is what all standards projects do, but That has led to a decision that there is “No improvements going forward.
I would say that 3GPP has a very good more time budget in RAN3” available to
record of making this happen. take-up in the up-coming meetings in R17. We are working on ideas around quota
The major topics of the moment, based limitation and on issue prioritization
RAN3 has been evolving to meet the on the current time allocation, are Data and these efforts are reflected in our
strong demand of these new technologies. Collection for SON/MDT, NR Multicast RAN3 e-meeting guidelines. Later on,
In the process of 5G standardization, and Broadcast Services, Integrated Access when we come back to F2F meetings,
there were various new innovations and Backhaul Enhancements for NR, NR the good mechanisms from e-meetings
coming forward to be specified in RAN3, QoE Management and Optimizations for will continue to contribute. I believe that
including new QoS architecture support, Diverse Services. this period of e-meetings will help us to
CU-DU/CP-UP split and network slicing.
innovate the way we work in the future.
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