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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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