ACG Research

ACG Research
We focus on the Why before the What

Saturday, February 20, 2016

Business Case Analysis: Ericsson Router 8801 Distributed Subscriber Management

OTT traffic places huge demands on the backbone network. Three major trends are contributing to this: 1. Content moving towards 4K media streaming and requiring seven-times the bandwidth for each individual stream; 2. Increase in subscriber scale with the explosion of connected devices; 3. End users’ expectation of 24x7 connectivity with a high quality of experience to all of their favorite content from any location or device.

To address these trends, service providers must be able to satisfy consumers’ expectations and offer personalized services in a dynamic manner. To prepare the network to handle the relentless growth, service providers are reassessing their network and system architectures and building their content distribution networks based on a distributed network deployment model and disaggregated system architecture.

This paper will primarily focus on the shift in service providers’ requirements for the subscriber management function. It also discusses the disaggregation of functions in relation to subscriber management and distributed cloud-based networking.

Robert Haim of ACG Research conducted an analysis of Router 8801 deployment in a distributed subscriber management network architecture. The scenario compares Router 8801 to a leading second best alternative offering. The study found Router 8801 return on investment (ROI) levels of 299% for a single stack (IPv4 or IPv6 addresses) and 335% in a dual-stack (IPv4 and IPv6 addressing) mode over seven years. Total cost of ownership savings levels of 65% (single stack) and 66% (dual stack) were found during the same period.

Read more: ACG Ericsson Router 8801 Business Case.

Contact for more information about developing your business case.

         Robert Haim

Wednesday, February 3, 2016

The 5G Wave of the Future

Today, congestion plagues low-frequency below 6GHz spectrum bands, which, consequently, not only makes it very difficult to add more capacity but also limits the number of antennas used (no more than two or three antennas).

The landscape, however, is much different in the high-frequency bands, usually known as the millimeter wave (mmW). The channels are much wider, reaching even 250MHz and multiples thereof in some bands (such as E-band), providing the needed capacity for 5G access and backhauling. In general, the mmW can request a wide availability of spectrum, which is a prerequisite for both access and backhaul. More antennas can be used (ranging from 4, 16 or even 32), resulting into beamforming that as it advances to shorter wavelengths allows for smaller antennas (including arrays needed for beamforming and beamsteering). Antenna directivity is much better in high frequencies, allowing a high spectral reuse factor. High-frequency radios can widely be used today and demand will continue to grow, especially for E-Band (80GHz) in dense areas where high capacity is needed. ACG anticipates that the momentum for E-Band will continue and will be preferred for new 5G (by 2020 or earlier) deployments technologies. (One in five links could be E-band in 2020.)

Regulation is the main enabler for high-frequency solutions adoption because by applying different licensing models it could encourage better use of spectrum, weighing in factors such as frequency bands, geographic region, and local microwave hop density. Ericsson recently described the multiband booster method, which could maximize spectrum efficiency, add new technologies that can exploit unused spectrum, and upgrade the capacity of microwave backhaul networks up to tenfold. This is a great option that has been used for years from other leading vendors as well but in most cases is still restricted by regulation.

Introducing and allowing wider channels in less deployed areas would further encourage the use of multiband solutions. Leo Macciotta, Huawei’s Senior Marketing Manager, highlights that “the challenges in capacity and latency requirements posed by LTE-A and in the future 5G make this kind of equipment the best and most cost-efficient choice for a future-proof deployment. Continuous investments in component, system and antenna technology provide a clear and dependable road map of improvement in performance such that we are confident that E-band will become one of the key building blocks of the future front- and back-haul networks for 5G and beyond.”

For access, most vendors could offer high modulation, wider channels, and multiple antennas (MIMO). The capacity offer varies between 2 and 4 Gbps full duplex, although some vendors are testing solutions in the lab that could go up to 10 Gbps in a range of a few kilometers. The MIMO types used today in most cases are 2x2 and 4x4 but could increase much higher along the 5G spec. This is not the case for backhaul; although the MIMO feature is offered, there is no real demand yet, but that might change beyond 2020.

E-band has recently come into mainstream use for mobile backhaul, allowing capacities of up to 10 Gbps over link lengths up to several km (even more than 10 km when bundled with lower frequency bearers) and is currently shipping in volume. Regarding backhauling, Yigal Leiba, co-founder and CTO of Siklu, mentioned that “a capacity of 2 Gbps could be enough today and possibly for the next 2 years for Mobile Operators and specifically for network aggregation layers and major Macro Base Stations backhauling, while 1Gbps street level backhaul could serve effectively Small Cells.” Looking to the future, the industry shares a vision of using frequencies above 100 GHz, as they will enable capacities in the 40 Gbps range over hop distances of about a kilometer but mostly for access. Regarding 5G and backhaul, there is already pressure, and leading vendors and major Tier 1 operators are worried that backhaul requirements may not be kept in the right considerations.

Tying the whole industry ecosystem together is the ETSI mWT (Millimetre Wave Transport) ISG, a common forum for component, subsystem and system manufacturers, telecommunications operators, and regulator. The forum promotes understanding and acceptance of mmW worldwide. With endorsements from such respected groups the future of these technologies looks promising.