Ensuring The Connected 5G Experience


5g Experience

The world's demand for data is increasing at an astonishing rate. We need to be connected wherever we are and expect a seamless content rich service. With current devices consuming more and more data and more and more internet enabled devices, the current network infrastructure needs major changes to keep up with demand.

5g Connected Devices

The 5G Solution - More Than Just An Air Interface

With the demand for data set to explode, next-generation 5G networks are being investigated as the solution. Three approaches are being taken towards supporting these huge traffic increases.

  • Making more efficient use of available frequencies using new access technologies
  • Increasing network speeds and optimizing the architecture
  • Opening-up new frequency bands
5g Data Growth

Making more efficient use of available frequencies is closely related to speeding-up the physical layer access protocols and wireless access technologies. Increases of efficiency from 2.5 to 10 times have been proposed as targets for 5G waveforms and access methods.

Further proposals for 5G systems aim to increase spectrum efficiency even further by speeding-up existing technologies, using newly opened frequency bands, increasing network density, and support for this is being developed. Rapid developments in CPU processing power and cloud computing are expected to be key elements in deployment of 5G services.

5G will be both an evolution and a revolution. An evolution as mobile evolves to support a wide range of new use cases, and a revolution as the architecture concept is being predicted to completely transform to enable these new use cases.

  • Provide fast, highly efficient network infrastructure
  • Support more and more device connections
  • Low latency, low power consumption
  • Data rates that exceed 10 Gbps

5G includes the evolution of existing 4G networks that use technologies such as C-RAN and HetNet to increase capacity of existing networks with an affordable cost. But revolution for core architecture to fully use SDN/NFV and network "slicing," the use of a new millimeter wave band air interface for higher capacity, and new architecture/signaling for extreme low latency.


Spectrum

As the radio interface of mobile phones has evolved, it has typically been changed about every ten years, and the 5G (5th Generation) interface is expected to start being used in the 2020s.

Similar to 3G and 4G cases, ITU-R (International Telecommunication Union - Radio communication Study Groups) will request standard organizations to standardize a new interface based on their recommendations for performance and capabilities. After evaluation of each submission, the standards that succeed will be authorized and known as IMT-2020. For the 3G case, WCDMA submitted by 3GPP (the 3rd Generation Partnership Project) and CDMA-2000 by 3GPP2 were authorized as IMT-2000, and for the 4G case, LTE-A (Long Term Evolution-Advanced) by 3GPP and WiMAX-Advanced by WiMAX Alliance were authorized as IMT-Advanced.


5G Standardization Status in 3GPP

Anritsu develops timely mobile communications measurement solutions helping customers quickly develop products meeting the latest communications standards. Right from the earliest 3G era using the W-CDMA world standard, Anritsu has been developing and offering base station simulators to world-leading chipset vendors, communications operators, terminal makers, and others as practical solutions for implementing RF and protocol tests. In addition, the company supports its customers with a wide product range covering various types of base station simulator required at each stage of chipset, terminal and application development, manufacturing, quality- assurance inspection, infrastructure installation and maintenance (I&M), etc., as well as testers for application development and production lines, RF/protocol conformance test systems, handheld testers for field I&M, and more. The company has leveraged its long experience in supporting customers worldwide with 3G/4G (LTE) deployments for proactive development of 5G measuring instruments offering timely measurement solutions to makers developing 5G products, starting with main (tier-1) chipset makers.

For both 5G and other developments, choosing the right external partner based on one's own company development resources is a key element in getting a product to market as soon as possible. When developing products, such as 5G, using the latest technologies, sometimes the resources to be procured outside the company are also under development. What is the most important element in the race against time when selecting a partner for a new product development? The key elements are selecting a partner with management experience in minimizing problems, keeping to the customer's planned schedule, procuring resources as and when necessary, comparing and investigating procurement sources, long-term experience and track record in 3G/4G (LTE), etc., development.


5G Waveforms

4G radio access is based on orthogonal transmission for both DL and UL. Orthogonal transmission avoids interference and leads to high system capacity. However, for rapid access of small payloads, the procedure to assign orthogonal resources to different users may require extensive signaling and lead to additional latency. Thus, support for non-orthogonal access, as a complement to orthogonal access, is being considered for 5G. Examples include Non-Orthogonal Multiple Access (NOMA) and Sparse-Code Multiple Access (SCMA)

5g Supersition
Superposition encoding example

The 5G radio access technology (RAT) must fulfill the data traffic demand in the coming years with rates above 10 Gbps and sub-millisecond latency. These rates can be achieved, principally, with bandwidths of at least 200 MHz, and using multiple-input multiple- output (MIMO) antenna techniques and interference rejection combining (IRC) receivers. Ideally, the waveform to be used should have good implementation properties, such as limited computational complexity for the generation/detection, limited time/frequency overhead, good localization in time, good spectral containment and simple extension to MIMO, amongst others. It has been shown in 4G that OFDM is suitable for both the good MIMO implementation and also the simple processor implementation in the user devices, and so 5G waveforms are looking to build on this and further evolve OFDM to overcome the current limitations.

Three of the different waveforms that are being considered to be part of 5G

  • FBMC - Filter Bank Multi-Carrier
  • UF-OFDM - Universal Filtered OFDM
  • GFDM - Generalized Frequency Division Multiplexing

5G Testing Challenges

As the network concepts and technologies develop for 5G, so the corresponding test methods and processes will evolve to match this. Future 5G test methods will need to provide a high confidence to operators that the technology and services are implemented according to specification, and that the quality of service is matching to the requirements of the application or service being delivered.

A fully data-centric 5G network with a very wide and diverse set of applications to test would require a massive effort in standalone testing. Test automation, monitoring and built in test systems will be essential for analyzing properly the performance of such a network. In addition, the emergent solution to use Ultra Dense Networks (UDN) for interconnecting the radio access elements with the backhaul architecture using cloud networks will enable the development of cloud based test services for testing everything from everywhere. So, although 5G will introduce many new test requirements and challenges by the use of SDN/NFV and cloud services, this same technology can also be used for creating new test solutions that address these needs. With this in mind, cloud solutions are seen as both the new demand and the new solution for 5G network testing.

Anritsu can provide a host of solutions to facilitate and assist this research and development to enable the 5G world.

5g World
  • Air Interface/Device
    • New waveforms (FBMC, UF-OFDM, GFDM) and frequency bands
    • Massive MIMO beamforming
    • Advanced antenna technology
  • Wireless/Fixed Access Network
    • C-RAN and the evolution to flexible multi-carrier network
    • HetNet evolution
    • WDM network extension from metro to access
    • Low latency architecture and EDGE computing
  • Metro/Core Network
    • SDN/NFV
    • High speed data links
    • 400 Gb Ethernet and beyond
  • Network Management and Service
    • 5G network slices
    • "end to end" service orchestration
    • QoS
  • Cloud Computing and Big Data
    • Data warehousing
    • High speed servers and inter-connects
    • Predictive data analytics