Here is ICANN`s paper on 5 G converted to a Ebook
ICANN Office of the CTO Alain Durand OCTO-004
2 3 January 2020
The Internet is increasingly mobile. The next wave of devices Internet-connected devices won’t be limited to computers or smartphones with an actual human being in front of the screen. It will include Machine-to-Machine communication with Internet of Things (IoT) devices. With those two trends in mind, the introduction of 5G(the fifth generation wireless technology for cellular networks)is of special importance to the Internet in general and ICANN in particular.The fundamental question being asked by the introduction of 5G boils down to: Is the current model of the Internet (known as the TCP/IP protocol suite) still relevant in a 5G world? This question for ICANN translates into the two following questions:
•Is DNS still operable in a 5G world, especially considering latency sensitive applications?
•Is the set of unique identifiers ICANN helps coordinate still useful,or does 5G bringwith it the need for a different set of identifiers?
Over the years, there have been a number of academic research projects aimed at redefining networking for a “future internet”. More importantly, any new attempt to replace TCP/IP should probably consider decades-long timelines and any alleged benefits would have to outweigh the complexities and cost of such transition.Furthermore, ICANN notes that the IETF has already done extensive work to make IP work in constrained environments, such battery-operated devices or very low power/very low bandwidth networks in the 6lopan and successor 6lo working groups. Other IETF efforts, such as those done in the QUIC working group, evolve the transport layer protocols to provide, among other things, stream multiplexing and low-latency connection establishment.There does not appear to be a clear need for a new identifier system for classic user-oriented applications using 5G. However, IoT is a domain that could benefit from new global identifiers, especially some that could better handle privacy. Such identifiers can be implemented directly within the DNS.DNS resolution latency and caching are a network operation/optimization concern, not an architectural issue. ICANN has the following recommendationsfor 5G networks:•DNS caches for latency-sensitive 5G apps should be as local as possible and have aggressive prefetching configured.•A distributed caching system might help maximize the efficiency of the overallDNS resolution system.•IoT application developers looking to minimize the effect of DNS latency may want to investigate adapting their applications to query DNS data well ahead of connection establishment.ICANN believes the model of a single Internet, based on a global system of unique identifiers, is the best way to maximize the benefits the Internet can bring. There is a risk thatpopular platforms couldevolve to leverage 5G Network Slicingusing their own, private,identifier ICANN | 5G Technology, OCTO-004| 23January2020| 4system. If that were to happen, the Internet would fracture and only the long tail of lesser-known applications will keep using the Internet global system of unique identifiers.