The XCellAir product is a virtualized and centralized software as a service solution that automates the deployment and operation of HetNets, integrates RRM and SON techniques with those operations, and provides a platform for the delivery of value added services over the network.


In the United States, the FCC established a new Citizens’ Broadband Radio Service (CBRS) for shared wireless broadband use of the 3550-3700 MHz band (3.5GHz Band) & similarly ETSI Technical Committee for Reconfigurable Radio Systems (TC RRS) has announced the completion of the specification for the support of Licensed Shared Access (LSA) in 2300-2400 MHz band. The new rules will make additional spectrum available for flexible wireless broadband use, leading to improved broadband access and performance for consumers – while protecting incumbent users from interference.



Figure above illustrates the CBRS concept and framework. The proposal is based on three tiers:

  • Incumbent Access (Tier1): Users of this tier include authorized federal (e.g. radar) and grandfathered Fixed Satellite Service users.
  • Priority Access (Tier2): This tier consists of Priority Access Licenses (PALs) that will be assigned using competitive bidding within the 3550-3650 MHz portion of the band.
  • General Authorized Access (Tier3): This tier is licensed-by-rule to permit opportunistic access to the band for the widest possible group of potential users. General Authorized Access users are permitted to use any portion of the 3550-3700 MHz band not assigned to a higher tier user and may also operate opportunistically on unused Priority Access channels.

Access and operations will be managed by a centralized Spectrum Access System (SAS), conceptually like the databases used to manage Television White Spaces devices.

Whether it is MNO’s leveraging shared spectrum to further densify their existing network or MSO’s using shared spectrum as part of their wireless strategy, shared spectrum operation is likely to experience some of the same challenges as in Wi-Fi & LTE-LAA, especially in the opportunistic GAA tier, where a variety of technologies (e.g. LTE, Wi-Fi etc.) are likely to coexist and contend for same spectrum. Without a sophisticated RRM-SON system, users on this band are likely to experience congestion and Quality of Experience (QoE) issues.

XCellRAN for Shared Spectrum can provide the same coordination as foreseen for 3.5GHz shared spectrum, including:

Provisioning & Optimization

  • Auto-provisioning and centralized management of shared spectrum equipment along with LTE/Wi-Fi in a single system
  • Coordinated radio resource management (RRM) across shared spectrum band working with the SAS system to allocate optimal channel & power configurations
  • Real time tracking of interference & congestion enables auto tuning of channel/power ensuring high QoE for users

Visibility & Analytics

  • Provide consolidated radio environment monitoring, mapping and visualization tools
  • Radio environment map including neighbor locations, radio configuration, propagation models, signal strength and interference dynamics
  • Real-time & Historical view on key performance indicators across entire network, small cells & individual devices

Unified Management

  • XCellAir intends to provide a single system that manages all types of dense wireless access networks, unlicensed (e.g. Wi-Fi), licensed (e.g. LTE) and shared or lightly licensed (e.g. 3.5GHz/2.3GHz). Visibility, capacity management, policy based network selection orchestrated via single pane of glass
  • Cloud architecture framework supporting existing Wi-Fi/LTE networks designed to easily extend support for newer technologies like shared spectrum preserving investment
  • Extensible databases enable applying common feature set like provisioning, optimization and fault management while adapting to specific technology type


For additional information on the XCellRAN solutions for specific technologies: