Saguna Networks raised $3M in a round led by a [German, according to The Marker - here] communications equipment supplier and its existing investors, including Xenia Venture Capital Ltd (announcement - here - Hebrew).
Saguna develops caching and optimization technology for radio access networks. See "[Heavy Reading]: Mobile Caching - 'part of larger traffic management solutions'" - here.
My sources say that several global equipment vendors are in the process of integrating its technology into their base stations/backhaul products. One of which is the above mentioned vendor who led the current round.
See "Mobile Internet co Saguna Networks raises $3m" - here.