Scalable Small Cells for Reliable Indoor Coverage

As the use of smartphones and tablets skyrockets, today’s enterprises require an unprecedented level of mobile-broadband capacity inside buildings. A single city block in a large financial center can have tens of thousands of mobile devices eager to exchange gigabytes of data with corporate servers and the cloud. A large suburban mall can contain tens of thousands of customers who want to access social-media websites. Today’s macro-cellular networks are not capable of providing reliable coverage and capacity inside buildings. By bringing the RAN inside, SpiderCloud can, with its breakthrough Enterprise Radio Access Network (E-RAN) system.

SpiderCloud’s E-RAN system consists of two elements:

  • SpiderCloud Radio Node (SCRN): High performance Multi-Access 3G/LTE Small Cell system for scalable indoor and venue deployments
  • SpiderCloud Services Node (SCSN): An enterprise premises controller that enables easy installation, integration with carrier and enterprise networks, and seamless mobility

Mobile operators can now co-deploy 3G/LTE multi-access Small Cell Radio Nodes, all managed by a single SCSN. The SCSN makes it possible to ‘densify’ an in-building network without impacting the rest of the network. It aggregates all the small cells deployed inside and makes the overall system appear as a single node to the mobile network. With SpiderCloud, a system of 3G/LTE Small Cells appears as one cell to the mobile network 3G Iuh-compliant Gateway and as a single eNodeB to an Evolved Packet Core (EPC) network.

SpiderCloud’s self-organizing network technology, and its use of existing Ethernet infrastructure for connectivity and power, ensures that its system can be installed in a large building within days, rather than weeks or months. SpiderCloud’s support for “soft handover” between radio nodes ensures that voice calls are not dropped as people walk within a building. Aggregating all the radio nodes at the services nodes optimizes backhaul and allows operators to more easily control and manage the system.

For macro cellular networks, mobile operators demand voice call set-up success rate (CSSR) to be higher than 98 percent and voice call drop rate (CDR) to be less than 0.8 percent. E-RAN networks, with soft handover, today show average voice call set-up success rates of 99.5 and an average call drop rate of less than 0.8 percent.  The benchmark testing found that the best E-RAN deployment achieved a call setup success rate of 99.8 percent and a call drop rate below 0.4 percent.  In comparison, individual or “mesh” small cells using hard handover experienced voice call drop rates of 5 percent or more.

Each deployment handles thousands of voice calls every day, ranging from 300 in enterprises where mobile devices complement desk phones to over 3,100 in enterprises where only mobile devices are used and the small cell system handle all broadband communications needs. Each of the networks manage hundreds of thousands of data and handover sessions every day, with the largest deployment experiencing over 500,000 daily sessions.

In addition, SpiderCloud’s system enables enterprise users to access applications on company intranets from their mobile devices when they are at work. The services node, if integrated with an enterprise’s IT infrastructure, is capable of locally switching data from authorized mobile devices to an enterprise’s LAN. Enterprises can also create new applications using a wealth of local intelligence available at the services node – ranging from presence to location and analytics.