Control-/Data Plane Aspects for N6 Traffic Steering
2018
Current standardization effort on the evolution of the mobile
communication system reconsiders the mobile data plane protocol. The
IETF DMM Working Group has work that proposes and analyzes various
protocols as alternative to the GPRS Tunneling Protocol for User Plane
(GTP-U) for an overlay deployment in between the mobile device's
assigned data plane anchor and its current radio base station, which
are denoted as N9 and N3 interfaces. In the view of some future
deployment and the original intent per the very early DMM WG charter,
a mobile device's data plane anchor may be highly distributed and
re-selected for optimization throughout a mobile device's
communication with one or more correspondent services. Such re-
configuration has impact on the packet routing in between the mobile
device's data plane anchor and the one or multiple data networks
hosting the services, which is denoted as N6 interface. This draft
proposes and discusses a solution to control, setup and maintain
traffic treatment policy on the cellular communication system's N6
interface while taking the UE's PDU session settings per the
cellular system's control plane, such as QoS and locator
information, into account.
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