To achieve a smooth operator migration path to 5G NR frequency bands while preserving NB-IoT and LTE-M deployments 3GPP has agreed that the LPWA use cases will continue to be addressed by evolving NB-IoT and LTE-M as part of the 5G specifications.
The realization of 5G in cellular mobile radio will generate an immense number of new business opportunities. Everything from entertainment and sports to medicine, manufacturing, transportation, construction, and education will be affected by 5G.
To achieve this, many changes of the network infrastructure as well as new features supplied by mobile devices are required. Naturally, the introduction of this new network technology will have a significant influence in device testing in general and in 5G USIM/USAT testing in particular.
To get not lost in the jungle of new business applications the ITU-R (International Telecommunications Union - Radiocommunication) classified them in their IMT-2020 specifications into three categories:
mMTC targets the type of connections also known from the Internet of Things (IoT). It is characterized by a large number of connected devices typically transmitting a relatively low volume of non-delay-sensitive data. IoT stands for low power wide area (LPWA) secure operator managed networks using licensed spectrum bands for sensing, metering, and monitoring devices. 3GPP specified this network technology starting with release 13 of their core and test specifications, already introducing the terms NB-IoT and LTE Cat M1 within LTE environment.
Mobile IoT applications as well as devices providing mMTC both are typically demanding
To achieve a smooth operator migration path to 5G NR frequency bands while preserving NB-IoT and LTE-M deployments 3GPP has agreed that the LPWA use cases will continue to be addressed by evolving NB-IoT and LTE-M as part of the 5G specifications.
eMBB stands for a natural evolution of existing 4G networks addressing human-centric use cases assuring faster data rates and therefore a better user experience than current mobile broadband services. It will provide
Apart of the consumption of multimedia content for entertainment purposes there are countless other applications that will benefit from this type of connectivity, as Virtual Reality (VR), Augmented Reality (AR), real-time video monitoring, virtual meetings with 360o video, real-time interaction.
URLLC is a communication service for successfully delivering packets with stringent requirements, particularly in terms of availability, latency, and reliability. They are demanding
It addresses primarily services for latency sensitive applications like factory automation, autonomous driving, and remote surgery. These applications require submillisecond latency with error rates that are lower than 1 packet loss in 105.
As strange as it sound, 5G is really nor just one technology. The mix of different technologies allow to get just the flavor of speed, number of connected devices per cell, or battery live you need for your application. Draw a circle spanned by all achievable 5G performance characteristics. One 5G device may require ultra-reliable services, whereas another one may need ultra-high-bandwidth communication or extremely low latency. Determine what you want to achieve, or what your customers expect in terms of performance and put a dot within this circle. Starting from there it is easy to determine what infrastructure is required to offer a top user experience for your customers. It is the big challenge of 5G to enable the coexistence of this very heterogeneous services within the same physical Radio Access Network (RAN) architecture.
Figure: Use case specific requirement maps within 5G
To cope with the requirement of providing simultaneously coverage and capacity 5G can broadcast in following frequency bands:
The technology used to meet the diverse requirements at the same time within one network is called network slicing. It allows an intelligent allocation of the network computing, storage, and communication resources among the active services with the aim of guaranteeing their isolation and given performance levels. It is achieved by running multiple logical networks as virtually independent operations on a common physical infrastructure. This way a 5G network can adapt to the external environment rather than the other way around.
Standards for slicing are not complete yet, but network slicing technology is maturing rapidly, so that commercial deployments are anticipated latest end of 2020.
The Subscriber Identity Module (SIM) has been authenticating secure access to the mobile network up to now and it will do so also under 5G, irrespective of whether the SIM is implemented on a UICC or eUICC. Therefore comprehensive conformance and interoperability testing will be as indispensable as it is. As already mentioned, standardization of the core technology as well as of the test procedures is still on the way for 5G. The certification bodies GCF and PTCRB , have approved the elaborated work item proposals for USIM/USAT Interworking with 5G.
COMPRION’s participation in relevant standardization bodies gives us an edge when it comes to preparing the ground. Just like with LTE and legacy cellular technologies, we are early in the market because of our expertise for testing invested into the new epecifictions. We have already implemented the needed core changes and activated the relevant GCF Work Items and RFTs at PTCRB. For example COMPRION contributes holding the rapporteur ship at PTCRB.
Among the great number of different options for network operators to migrate from LTE to 5G, standardization for USIM/USAT testing starts with the version where both, core network and base stations, use 5G technology. The main scope is the interworking of 5G enhancements for 3GPP TS 31.102 and 3GPP TS 31.111 together with the new 5G core network.
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