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Test set supports RF parametic, protocol testing

Posted: 04 Jul 2011 ?? ?Print Version ?Bookmark and Share

Keywords:digital radio? test set? LTE?

Aeroflex Ltd. has launched two options for the Aeroflex 7100 LTE digital radio test setoption 103 and option 105. These options support testing of 3G WCDMA/HSPA and GSM/GPRS, and data call hand-over between LTE and HSPA.

As WCDMA network operators migrate toward LTE, the devices used by their subscribers will need to operate with legacy 2G and 3G networks, as well as new LTE networks. Devices must hand over seamlessly between networks when appropriate. Options 103 and 105 for the 7100 LTE digital radio test set facilitate testing of these multimode devices across all the standards they are required to support, and test data hand-over between LTE and HSPA.

The 7100 provides manufacturers of both cellular terminals and chipsets with a simple unified test environment to fully test all the radio access technologies (RAT) supported by the device under test.

Since LTE is a data standard, a three-phase rollout is taking place to ensure that voice calls are handled appropriately: in phase one, LTE networks are supporting only data-centric devices such as USB modems; 3G handsets will still be used for voice calls; in phase two, handset devices that rely on fallback technologies (WCDMA or GSM) for voice support are being introduced; and in phase three, handset devices will be added that use the LTE network for both data and Voice over IP (VoIP). The voice solution will employ the VoLTE (Voice over LTE) standard.

Aeroflex test systems support operators and device manufacturers during each phase of the rollout. The 7100 LTE digital radio test set options will be required in Phase II and beyond to fully characterise the performance of handsets across all the RATs. This includes so-called "circuit-switched fallback"where a handset used for data applications such as Web browsing can fall back to a circuit-switched 3G connection if an incoming voice call is received. It is also important to be able to test whether the device selects the correct cell and technology when it is first powered up.

The 7100 LTE digital radio test set option 105 offers built-in GSM and WCDMA RF test cases; it can fully characterize mobile terminal devices to 3GPP Release 6 specifications. The 7100 feature set will track the 3GPP WCDMA standard as it evolves, with the latest releases applied to handset designs.

Based on Aeroflex's RF and baseband technology, the 7100 supports both RF parametric and protocol testing for LTE terminal devices. The 7100 simulates a network from the physical layer to the core network IP infrastructure, with an optional fading simulation capability. Focused on the R&D marketfrom components to handsetsAeroflex claims its 7100 is a comprehensive test system for LTE mobile devices incorporated into a small footprint, single bench-top instrument.

Options recently introduced for the 7100 test set include support both for LTE TDD and for Simultaneous Voice-LTE (SV-LTE) with 1x CDMA.





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