* WGs marked with an * asterisk has had at least one new draft made available during the last 5 days
  • Name: 5G IP Access and Session Management Protocols (5GIP)
  • Description:

The goal of this group is to standardize IP protocols for access and session management to be used in the fifth generation (5G) networks by the virtualized functions in the core network. Aim is to include equally wireless and wireline access networks and support both mobile and fixed end hosts.

Regarding access management, a framework allowing clients and networks in a multi-access scenario to negotiate combination of uplink and downlink paths taking into account client's application needs and network conditions will be developed. To allow for mobility, the identifier locator addressing protocol which does not involve tunneling will be developed considering single/multiple prefix allocation to the end host interface as the base protocol. Proxied version of the base protocol which may involve encapsulation will be developed for communication with legacy servers. As part of the session management, session and service continuity will be defined to provide seamless mobility. The use case comprises 5G User Equipment (UE) which originally is attached to a 5G radio access network later moves to an area served by a Wi-Fi access point and vice versa. The Wi-Fi AP is connected to a central office within the fixed network while both access networks are served by a converged common core.

5G Internet of Things (IoT) is in scope. Addressing for large number of small IOT devices would be a challenge unless they are considered local and use IPv6 Unique Local Address (ULA) for local communication and use a Proxy/Mapper? gateway to access the Internet, a case for proxied version of the base protocol.

The activity may leverage protocols elsewhere at IETF such as dmm protocols for distributed mobility anchoring, lpwan for header compression in low power IoT device usage cases.

The BoF gathers implementers, users and experts from academia, institutes, IT and automotive industry, and public authorities. Strong relationships with SDOs: 3GPP SA2 & SA3, BBF 5G Project Stream, ITU-T 5G Group, IEEE (OmniRAN).

The need for this work stems from:

  • Fourth generation network solutions in place for access management do not involve/consider multiple simultaneous access to wireless and wireline access network and the resulting networking experience may not meet the requirements set forward for 5G
  • Mobility management solutions involve tunneling in most cases with fixed anchors placed many hops away from the UE and not being able to cope with 5G UE mobility characteristics
  • Session management solutions are not designed for the upcoming 5G common core network to which all access technologies will connect and thus not allow seamless session continuity in an environment where multiple simultaneous access is expected to be used more commonly.
  • Addressing schemes are limited in the number of prefixes assigned to the UE limiting UE's ability in communication. In case of IoT, current solutions which assign routable prefix to the device do not scale well in 5G IoT where the number of devices connected will be very high.
  • Agenda
    • TBD
  • Discussion - 45min