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Company proposal changeRAN3 #133-bis

China Telecom on SCTP maturity and QUIC performance for RAN-CN transport

Published 2026-11-04Updated 2026-11-043GPP TSG RAN WG3 #133-bis

At a glance

China Telecom's contribution expects no added performance benefit from QUIC, a transport protocol considered for the radio access network to core network (RAN-CN) interface.

What changed in the proposal

At RAN3 #133, the 3GPP radio access network working group listed China Telecom's R3-263262 contribution. The earlier title names Stream Control Transmission Protocol (SCTP) and QUIC. Both titles mention the point-to-point (P2P) interface, while both contribution statements name the RAN-CN interface. Observation 2 says "SCTP has been commercially deployed on the RAN-CN interface for more than two decades and represents a mature transport protocol for mobile network signalling."

Source: R3-263262, China Telecom, 3GPP TSG RAN WG3 #133. © China Telecom.

The register marks R3-263262 not treated, meaning it was not discussed at RAN3 #133. In R3-264339, China Telecom addresses QUIC as another transport protocol for the same named interface. Proposal 1 states "introducing QUIC as the transport protocol for the RAN-CN interface is not expected to provide additional performance benefits." The proposal text itself states no metric or measurement.

Source: R3-264339, China Telecom, 3GPP TSG RAN WG3 #133-bis. © China Telecom.

The register, 3GPP's list of meeting documents and their status, marks R3-264339 available at RAN3 #133-bis. Neither register entry records a transport protocol decision. Our reading: The SCTP observation and QUIC proposal do not document a reversal of China Telecom's position.

Sources

  1. R3-264339, China Telecom, 3GPP TSG RAN WG3 #133-bis. © China Telecom.
  2. R3-263262, China Telecom, 3GPP TSG RAN WG3 #133. © China Telecom.

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