flash123

See https://www.qualcomm.com/news/snapdragon/2015/02/18/introducing-snapdragon-lte-modems-and-modem-classes Until Qualcomm announce a new version chipsets next year, as long as Apple and Samsung stays with Qualcomm LTE modem or their processor with built-in LTE modem , Samsung is stuck with two carrier Carrier Aggregation (CA) unless they use X12 chipset. We assume Apple will go with x12 chipset in the future iphone 7 since it will be more than year since Qualcomm announced it. This is just to get three carrier CA either with Sprint or others (AT&T and overseas carriers) since CA limit is <=20Mhz per carrier. One will hope that with each cellular vendor hoping they can use three carrier CA, that in itself will increase the bandwidth for single carrier channel if they update to 3GPP release 10 infrastructure. That specification allows for an increase of "bandwidth" from 16bps/hertz to 30bps/hertz. So without CA, just having new 3GPP release >=10 infrastructure and devices that support this specification will increase throughput before adding CA. Currently all the US vendors are only using CA option of specification to increase speed until newer infrastructure can be deployed. See vendor's netgear hotspot specifications below AT&T Unite Pro (781S) is only using the download only CA option of 3GPP release 10 Verizon's AC791L is using release 9 (I think this is documentation mistake since CA is not in 3GPP release 9) but Samsung Galaxy 6 has a 3GPP Release 11 mandatory features Qualcomm LTE modem

Sprint has already ask for Band 25 CA to be added in 3GPP release 11 equipment along with AT&T and Verizon for release 11 and 12 similar request for release 11 and 12 from October 2014. See the below link: http://cdn.rohde-schwarz.com/pws/dl_downloads/dl_application/application_notes/1ma232/1MA232_1E_LTE_Rel11.pdf NOTE: There is mention on page 29 of what Sprint may do with LTE Band 41 when Clearwire is shutdown in November opening up that spectrum for Release 12 three carrier CA since the highest carrier channel spectrum can be used is 20Mhz.