ZTE and Sanechips claim up to 4% overhead cut from a single user-plane sequence number

RAN2 is the radio access network layer 2 working group. ZTE and Sanechips submitted R2-2605411 for RAN2 #135 and R2-2607131 for RAN2 #135-bis. The user-plane (UP) protocol stack carries user traffic. Observation 2 in R2-2605411 states "Supporting single SN in UP protocol stack is compatible with HLS but there may be impacts to RAN3 protocol". HLS means higher layer split of a base station between central and distributed units. RAN3 is the radio access network architecture and interfaces working group.

Source: R2-2605411, ZTE (with Sanechips), 3GPP TSG RAN WG2 #135. © ZTE, Sanechips.

In R2-2607131, Proposal 1 asks RAN2 to note "Overhead reduction (up to 4% for small IP packets which are predominant in IP networks)". Our reading: The later item quantifies an overhead claim, while the earlier observation identifies possible RAN3 protocol impacts.

Source: R2-2607131, ZTE (with Sanechips), 3GPP TSG RAN WG2 #135-bis. © ZTE, Sanechips.

R2-2605411 is listed as available at RAN2 #135, with no decision recorded in its register entry. R2-2607131 is listed as noted at RAN2 #135-bis. Our reading: Noted is the contribution's handling status, not acceptance of the proposed 4% gain.