The evolution of both HSPA+ and LTE standards has introduced aggregation of carriers for higher data rates, better load balancing and increased spectrum utilization, and since the dawn of LTE, the standard support for radio level interworking for HSPA and LTE radios has been included.

In this paper, Qualcomm and Ericsson share their insights on using circuit-switched fallback, (CSFB) as a solution to this challenge. Find out more about recent deployment experiences and extensive testing that has been conducted on the first phase of voice evolution between packet and circuit-switched networks.

The expansion and evolution of cellular networks over the past decades has been astounding. Networks initially designed for voice traffic have grown to accommodate increasingly high data-traffic loads. This growth has long relied on a network of macro cells to provide a good balance of wireless coverage and
capacity.

Ericsson - Backhaul plays a critical role in mobile broadband, and is rising in importance on account of the introduction of heterogeneous networks, known as hetnets.

Deploying vast numbers of small cells to complement improved and densified macrocell layers will require a range of highly scalable, flexible mobile backhaul solutions that support superior user experience.

Ericsson - Unlike previous 3GPP wireless technologies, LTE has no circuit-switched bearer to support voice, so carrying voice over LTE requires a migration to a voice over IP (VoIP) solution – commonly under the umbrella of IMS. Until this migration occurs, LTE-capable handsets need to revert to 2G or 3G for voice calls: an approach that is not ideal in the long term.

Heavy Reading - With the implementation of voice over LTE (VoLTE) and rich media communication services tipped to be a matter of when and not if for most large tier 1 operators, an Ericsson co-spon

Ericsson - LTE is rapidly emerging as the world’s most dominant 4G technology, taking mobile broadband to unprecedented performance levels.