Using Altiostar’s software-centric open vRAN architecture running on Commercially-Off-The-Shelf (COTS) baseband hardware, small cells of various kinds like femto, pico or micro cells can be deployed
Figure 1. Types of small cells with Altiostar solution
The baseband configuration for Altiostar solutions leverages a common fabric, i.e. the same software and baseband hardware for all kinds of radio configurations. This allows for macro configurations that can be coordinated with micro cells to allow for advanced algorithms such as eICIC for Hetnet type of configurations. When operators decide to migrate to 5G, the same common fabric can be used for migration to non-standalone (NSA) 5G mode with an easy upgrade.
Figure 2. Hetnet configuration with Altiostar
With a wide variety of configurations and bands available, the operator has a choice of deploying these cells in the same bands as the macro or as a new frequency layer.
With Altiostar, there is an option to use a centralized baseband over Ethernet transport that allows for advanced coordination algorithms between the macro and small cells. Using Altiostar’s unique centralized baseband, the operator has the option to connect the small cells without requiring dark fiber, i.e. it can be deployed using WDM, carrier Ethernet, microwave, mmWave, vDSL, GPON or any other transport that is economically feasible. In addition to this, using SON algorithms the operator can ensure smooth introduction of small cells without needing complex radio planning and optimization.
Micro cells, or so-called small cell RRU’s, are designed for maximizing the network capacity in high user-density urban zones, as well as providing wireless connectivity for network coverage holes that are left after the macro planning has exhausted all available sites.
This product can be placed along the streets on poles, lampposts or on walls, as coverage solution or as capacity enhancement in a HetNet architecture
Pico Cells or Femto Cells
Pico cells can be used in both outdoor and indoor scenarios. In the case of outdoor scenarios, hotspots of coverage can be created. These hotspots provide significantly higher received signal strength to the users as well as higher bandwidth. This helps in offloading capacity as well as providing coverage in potential RF null areas.
In the case of indoor, building penetration losses are circumvented as well as giving the user a seamless experience as they move from outdoor coverage to indoors. Using a combination of centralized commissioning and SON algorithms, introducing pico or femto cells to add indoor coverage for residential and enterprise locations becomes seamless.