With the growing reliance on network virtualization, new questions can be raised about the control plane for access that combines 5G and W9-Fi, and perhaps especially creating new ways of integrating mobile and Wi-Fi networks as peers.
The Wireless Broadband Alliance argues three broad approaches are possible, including access centric, core-centric and above-the-core.
The access centric approach is represented by 3GPP Release 13 for LTE access, with LTE WLAN Aggregation (LWA) for integrating trusted Wi-Fi with LTE and LWIP for integrating untrusted Wi-Fi.
Core-centric approaches were created by 3GPP Release 8 for the integration of untrusted Wi-Fi and in Release 11 for integrating trusted Wi-Fi into LTE’s Evolved Packet Core. Core-centric integration within a 5G deployment can either be achieved using Non-Stand Alone (NSA) or Stand Alone (SA) configurations.
Above-the-Core integration uses Multi-Path TCP and MultiPath Quick UDP Internet Connection (QUIC) protocols, and have been proposed for integrating Wi-Fi and mobile networks.
Above-the-core solutions are designed for mobile devices that have several or many wireless interfaces simultaneously active.
When the different access networks have different delay characteristics, above-the-core solutions can selectively decide to use only the lower latency path to deliver improved user interaction.
Above-the-core solutions can use the multi-path capability to handle the transition between the access network coverage areas.
When the different access networks have different probability of coverage, above-the-core solutions can use the multi-path capability to opportunistically leverage the local area coverage whilst having an “anchor path” over the wide area network.
When different access networks are deployed by different organizations, (a carrier Wi-Fi provider and a mobile carrier), above-the-core solutions can aggregate the connections with different IP points of attachment.
No comments:
Post a Comment