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LTE modem touts Cat 12 downlink capability of 600Mb/s

08 Oct 2015  | Will Strauss

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Qualcomm has announced its upgraded Snapdragon 820 X12 LTE modem that features 3GPP category 12 (Cat 12) downlink capability of 600Mb/s. In addition, it offers Cat 13 uplink capability of 150Mb/s.

The company originally announced the X12 modem as a Cat 10 (450Mb/s DL and 100Mb/s UL) device.

The Cat 12 downlink is enabled through 3x20MHz carrier aggregation (CA) and up to 256 QAM and support for 4x4 MIMO on one carrier. The Cat 13 uplink is enabled through 2x20MHz CA and 64 QAM and Qualcomm's proprietary Uplink Data Compression (UDC) engineered to enhance the user experience in a range of applications such as accelerating web page loading times.

Cellular technologies supported by the X12 include: LTE FDD/TDD, LTE-U, LWA, WCDMA (DB-DC-HSDPA, DC-HSUPA), TD-SCDMA, EV-DO, CDMA 1x and GSM/EDGE.

Moreover, the X12 offers Tri-band Wi-Fi in 2.4GHz, 5GHz and 60GHz bands. The device provides 802.11ac with 2x2 MU-MIMO and multi-gigabit 802.11ad capabilities.

Qualcomm also said the Snapdragon X12 packs a processor to offer comprehensive LTE-U support, increasing mobile network capacity and user throughput by aggregating LTE in licensed and unlicensed bands.

Snapdragon 820 X12 LTE modem

The X12 also supports LWA (LTE & Wi-Fi Link Aggregation) capability that is designed to allow mobile operators to use their unlicensed Wi-Fi infrastructure to augment their licensed LTE network spectrum capacity.

The X12 provides comprehensive service across connection types including Next Gen HD voice over LTE (VoLTE) and video over LTE (ViLTE) calling service using the network's IP Multimedia Subsystem, with support for call continuity between LTE and Wi-Fi.

Rounding out the X12 modem offering is its Zeroth Platform that enables the connectivity engine (CnE) to provide cognitive link selection by monitoring real-time Wi-Fi quality to decide if and when to shift the call from LTE to Wi-Fi or back.

The X12 modem is part of Qualcomm's Snapdragon 820 processor but is also available as a separate discrete modem.

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