Litepoint Corporation

Intel Corporation

Ramakrishna Yellapantula

Soumyadeep Banerjee

Steve Lawrence Sheya

Brett L Robertson

Malhar Vaishnav

Dirk J M Walvis

Yinghui Li

Chandra Punyapu

Karthik Nagasubramanian

A testing apparatus obtains user equipment (UE) parametric measurements with unknown and/or unavailable authentication and security information. The testing apparatus may obtain uplink and downlink parameters of a wireless device after the wireless device initiates registration while an associated timer is activated, enabling the testing apparatus to obtain additional measurement information without security information about the tested wireless device. The apparatus may also measure the UE's transmitted power level prior to the initiation of the authentication procedure. The testing apparatus may determine if a wireless device is to be tested at another frequency pair. If so, the testing apparatus redirects the wireless device to a radio resource at the other frequency pair. The testing apparatus then obtains uplink and downlink parameters for the wireless device by performing pre-registration and intra-registration measurements at the other frequency pair. The procedure is repeated until measurements for all desired frequency pairs are completed.

Performing parametric measurement for verification of a wireless communication device

A method for wireless communications testing using downlink (DL) signal transmissions from an access point to a mobile terminal and uplink (UL) signal transmissions from said mobile terminal to said access point. Accurate block error rate (BLER) testing of LTE mobile devices in a wireless signal environment is enabled by preventing repeated transmissions of the same downlink (DL) data block that would normally follow reception of uplink (UL) transmissions of negative UL acknowledgments (NACKs) caused by failures to decode prior DL data transmissions, thereby producing cumulative NACK counts accurately reflecting data reception errors.

Method for wireless communications testing using downlink and uplink transmissions between an access point and mobile terminals

Method for testing one or more of a group of radio frequency (RF) data packet signal transceiver devices under test (DUTs) with reduced signal interference from the remaining DUTs. A tester broadcasts a signal containing power control instructions about uplink signal power characteristics for communication with the tester. For example, for the LTE 3GPP standards, such characteristics could include power ramping step size, preamble initial received target power or maximum number of preamble transmissions for uplink signals transmitted from the DUTs. Following initiation of communication between the tester and one or more DUTs, the tester broadcasts a signal containing power control instructions to instruct the remaining DUTs to transmit any future signals with different uplink signal power characteristics. For the LTE 3GPP standards, such different characteristics could include reduced power ramping step size, reduced preamble initial received target power or reduced maximum number of preamble transmissions for uplink signals.

Method for testing radio frequency (RF) data packet signal transceivers in a wireless signal environment

A method () and apparatus () for cell detection in a wireless communication system may include acquiring (), using a transceiver, synchronization to first radio frame boundaries of a first physical channel from a cell. The method may include attempting to decode frames () of a second physical channel that has second radio frame boundaries that are a multiple of the first radio frame boundaries. The method may include performing () a cyclic redundancy check on the frames of the second physical channel. The method may include extracting () predictable information from a payload from frames that fail the cyclic redundancy check.

Method and apparatus for cell detection in a wireless communication system

A system and method is disclosed for testing a communication device. In accordance with the described invention, a single vector signal generator (VSG) is utilized to test manufactured 2x2, 3x2 and 4x2 MIMO wireless devices to identify possible manufacturing defects that may impair or disable the device under test (DUT) receivers from properly receiving constituted MIMO TX signals and accurately decoding the bits/symbols conveyed by transmitted TX signals. Disclosed embodiments may include a VSG coupled to a DUT. The VSG being configured to transmit data packets as a first codeword and a second codeword, wherein the VSG includes software and hardware architecture to manipulate the first codeword and the second codeword as emulated first and second waveforms, wherein the first waveform is different than the second waveform. The DUT being configured to receive the emulated first and second waveforms as prescribed signals from the VSG. The prescribed signals including a first received signal and a second received signal, wherein the DUT includes software and hardware architecture to manipulate the first received signal and the second received signal to generate block error rate results therefrom.

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Vernon Hills, IL, United States of America

Ramakrishna Yellapantula