Mobile terminal test device and mobile terminal test method
A technology for terminal testing and moving objects, which is applied in the field of throughput, and can solve the problems of obtaining ACK/NACK message throughput measurement, measurement results are wrong, and the sending start position is not fixed.
Active Publication Date: 2018-02-13
ANRITSU CORP
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Problems solved by technology
[0009] However, in the case of a TDD (Time Division Duplex Communication) method (such as TD-LTE (Time Division Long Term Evolution) method) that uses the same frequency for DL and UL and performs duplex communication in a time-division method, although the configuration 1 DL and UL are allocated to a predetermined number (for example, 10) of subframes of a frame, but since the allocation pattern can be changed according to the communication environment, etc., the mobile terminal starts to respond to its user data with an ACK / NACK message The timing is not fixed with respect to the start position of the DL user data transmission for the throughput test, and the ACK / NACK message may not be acquired at the exact timing to measure the throughput, which may cause errors in the measurement results
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[0044] Embodiments of the present invention will be described below with reference to the drawings.
[0045] figure 1 It is an overall configuration diagram of a mobile terminal test device (hereinafter simply referred to as a test device) 20 to which the present invention is applied.
[0046] The testing apparatus 20 utilizes the TDD (time division duplex communication) method to carry out the throughput test of the downlink of the mobile body terminal 1, and it includes the transmitting and receiving unit 21 and the test processing unit 22. It divides into a predetermined number of subframes and allocates DL and UL communication schemes to these subframes. In addition, in the TD-LTE scheme, this one frame is referred to as a radio frame, but is simply referred to as a frame here.
[0047] The transmitting and receiving unit 21 supplies a high-frequency signal modulated by the data signal from the test processing unit 22 to the mobile terminal 1 as a test object, receives ...
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A mobile terminal test apparatus and mobile terminal test method for accurately measuring the DL throughput of a mobile terminal of a TDD scheme. The apparatus includes a frame structure storage unit (26) that stores a plurality of frame structure information indicating that DL, or downlink, and UL, or uplink, are allocated to a predetermined number of subframes constituting one frame of the TDD scheme. mode; a scenario processing unit (24) including a mechanism for designating the type of frame used for the throughput test; and a timing control unit (27), which refers to the frame structure information corresponding to the designated frame type, the frame At least one of the UL subframes in the UL is determined as a subframe for the mobile terminal (1) to start the response for replying to the acknowledgment / non-acknowledgement message, and the number of subframes before the subframe for starting the response is determined by more than a predetermined number of subframes. At least one of the DL subframes is determined as a subframe for transmission start, and the mobile terminal test apparatus of the present invention accurately obtains the DL throughput for any specified frame type.
Description
technical field [0001] The present invention relates to a technique for accurately measuring throughput when a TDD (Time Division Duplex) mobile terminal receives downlink (hereinafter, referred to as DL) data from a base station. Background technique [0002] There are various tests for mobile terminals such as mobile phones and smartphones, and one of the most important test items is the throughput test for measuring the throughput when receiving DL data from a base station. [0003] The test of the mobile terminal is carried out using a so-called virtual base station device that communicates with the mobile terminal in imitation of a base station. However, the throughput test is performed by sending user data to the mobile terminal in DL from the test device side. and calculate the throughput based on the number of acknowledgment / non-acknowledgment (hereinafter, described as ACK / NACK) messages that are replied from the mobile terminal on the uplink (hereinafter, described...
Claims
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IPC IPC(8): H04L1/16H04W72/04
CPCH04L5/0082H04L5/0092H04L5/1469H04W88/02
Inventor 音成伸俊藤樫晴之
Owner ANRITSU CORP