Revolutionary Features in YateBTS 4

YateBTS 4 introduces redundancy support for YateUCN. This is a revolutionary feature that deserves some explanation.
redundancy scheme
Redundancy failover and load balancing.
A YateBTS network is a many-to-many mapping between YateBTS base stations and YateUCN core network servers. Core network loads are distributed evenly and are redistributed automatically if a server fails. The resulting network is resilient and easy to manage. To add more capacity, just add more servers. If a server fails, its users are shifted to other units within a few seconds. This is a sharp contrast to the conventional mobile network, a hand-configured, tree-like hierarchy, with points of failure that become more concentrated as you move toward the HLR.
Release 4 also introduces handover support, which is revolutionary in its own way because it is done very differently from conventional GSM. Because YateBTS has no BSCs, handover is a peer-to-peer operation. The result is a 2.5G radio network that behaves much more like LTE, which is one of the innovations that make the Unified Core Network possible.
handover scheme
Handover support is done using SIP
YateBTS Release 4 has been available since July, but got little fanfare at the time. That won’t be the case with Release 5, which will be ready soon, so watch this space.

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