AT&T Mobility's Voice over LTE-powered HD Voice solution provides much better call quality than traditional circuit-switched fallback voice or voice service from an over-the-top application, according to a new research report.
Spirent is bolstering its voice and video over IP communications, including voice over LTE (VoLTE) capabilities, by reaching a $25 million deal to purchase Radvision's Technology Business Unit (TBU).
In an independent performance benchmark study of six LTE Category 4 chipsets conducted by Signals Research Group, a Samsung pre-commercial chipset came out on top as the best performer.
How close is Verizon Wireless to offering voice over LTE? Pretty darn close, based on the fact that Spirent Communications' announced its 8100 mobile device test system has been selected to ensure that VoLTE/IMS devices destined for Verizon's network will comply with industry standards and the operator's certification requirements.
The expanding vision for location-based services is driving the need for solutions that enable mobile operators and device manufacturers to test location features on devices in real-world conditions. To that end, Spirent Communications has added what it describes as carrier-approved Assisted Global Navigation Satellite System record-and-playback capabilities to its Hybrid Location Technology Solution.
The test and measurement gear business is getting increasingly competitive as operators see network, device and even app reliability as essential to their success and demand more complicated, integrated solutions. Two items of news this week highlight the challenges as well as the opportunities inherent in the mobile broadband test systems market.
As the TD-LTE ecosystem ramps up, test and measurement companies are hustling to get in on the action as evidenced by the latest announcement from Spirent Communications, which is offering TD-LTE support on its CS8 mobile device tester.
Chipmaker ST-Ericsson is battling the contention that phones offering voice over LTE have battery life issues, saying such issues are restricted to first-generation LTE chipsets and devices running simultaneous voice and LTE (SVLTE) service during VoLTE calls.
Operators hoping to engage in widespread deployment of voice over LTE in order to gain spectral efficiencies in their network may face some unhappy customers because one vendor's recent tests showed that VoLTE calls can slash a device's talk-time battery life by half.
The TD-LTE ecosystem is ramping up quickly, but it is unclear if this nascent technology will burst out of the gate with the robust performance that characterized early products supporting the FDD flavor of LTE, according to Spirent Communications' Nigel Wright.