Mobile communication terminal test device and mobile communication terminal test method

Patent metadata

Field	Value
Publication number	US-9397923-B2
Application number	US-201414332476-A
Country	US
Kind code	B2
Filing date	Jul 16, 2014
Priority date	Sep 9, 2013
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

A mobile communication terminal test device includes: test signal transmitting means ( 40 ) for transmitting, to a mobile communication terminal ( 50 ), a test signal including a plurality of radio resource regions ( 1 to 8 ) each of which is surrounded by one or more sub-frames and one or more resource blocks; and response signal receiving means ( 14 ) for receiving a response signal to the test signal from the mobile communication terminal. The test signal transmitting means transmits, to the mobile communication terminal, the test signal which includes one radio resource region for each predetermined time interval (T) and in which the position of the radio resource region in the frequency axis direction varies for each predetermined time interval.

First claim

What is claimed is:

1. A mobile communication terminal test device comprising:
test signal transmitting means for transmitting, to a mobile communication terminal, a test signal which is divided into sub-frames in a time axis direction, is divided into resource blocks in a frequency axis direction, and includes a plurality of radio resource regions each of which is surrounded by one or more sub-frames and one or more resource blocks;
response signal receiving means for receiving a response signal to the test signal from the mobile communication terminal;
characteristic value conversion means for converting a characteristic value of the response signal from a characteristic value corresponding to time to a characteristic value corresponding to a frequency, on the basis of correspondence information between a predetermined position of one radio resource region in the time axis direction and a predetermined position of the radio resource region in the frequency axis direction; and
frequency characteristic display means for displaying the characteristic value so as to correspond to the frequency,
wherein the test signal transmitting means transmits, to the mobile communication terminal, the test signal which includes the radio resource region for each predetermined time interval and in which the position of the radio resource region in the frequency axis direction varies for each predetermined time interval.

2. The mobile communication terminal test device according to claim 1 ,
wherein the characteristic value conversion means converts the characteristic value of the response signal from the characteristic value corresponding to the time to the characteristic value corresponding to the frequency by replacing time corresponding to the characteristic value of the response signal with a frequency corresponding to the time, on the basis of the correspondence information between a predetermined time indicating the position of the radio resource region in the time axis direction and a predetermined frequency indicating the position of the radio resource region in the frequency axis direction.

3. The mobile communication terminal test device according to claim 1 , further comprising:
average value acquisition means for calculating an average value of the characteristic values corresponding to the frequencies,
wherein the test signal transmitting means transmits, to the mobile communication terminal, a test signal in which the radio resource region groups are repeatedly arranged in the time axis direction, and
the frequency characteristic display means displays the average value of the characteristic values calculated by the average value acquisition means.

4. The mobile communication terminal test device according to claim 1 ,
wherein the test signal includes a radio resource region group in which the radio resource regions are continuous in at least one of the time axis direction and the frequency axis direction.

5. The mobile communication terminal test device according to claim 1 ,
wherein the test signal transmitting means transmits, to the mobile communication terminal, the test signal including a radio resource region group which is set such that reference frequencies predetermined for the radio resource regions sequentially increase over time.

6. The mobile communication terminal test device according to claim 1 ,
wherein the test signal transmitting means transmits, to the mobile communication terminal, the test signal including a radio resource region group which is set such that reference frequencies predetermined for the radio resource regions sequentially decrease over time.

7. A mobile communication terminal test device comprising:
test signal transmitting means for transmitting, to a mobile communication terminal, a test signal which is divided into sub-frames in a time axis direction, is divided into resource blocks in a frequency axis direction, and includes a plurality of radio resource regions each of which is surrounded by one or more sub-frames and one or more resource blocks; and
response signal receiving means for receiving a response signal to the test signal from the mobile communication terminal,
wherein the test signal transmitting means transmits, to the mobile communication terminal, the test signal which includes:
one radio resource region for each predetermined time interval and in which the position of the radio resource region in the frequency axis direction varies for each predetermined time interval, and

a radio resource region group in which adjacent radio resource regions overlap each other in the frequency axis direction by a predetermined number of resource blocks.

8. A mobile communication terminal test method comprising:
a test signal transmitting step of transmitting, to a mobile communication terminal, a test signal which is divided into sub-frames in a time axis direction, is divided into resource blocks in a frequency axis direction, and includes a plurality of radio resource regions each of which is surrounded by one or more sub-frames and one or more resource blocks;
a response signal receiving step of receiving a response signal to the test signal from the mobile communication terminal;
a characteristic value conversion step of converting a characteristic value of the response signal from a characteristic value corresponding to time to a characteristic value corresponding to a frequency, on the basis of correspondence information between a predetermined position of one radio resource region in the time axis direction and a predetermined position of the radio resource region in the frequency axis direction; and
a frequency characteristic display step of displaying the characteristic value so as to correspond to the frequency,
wherein the test signal transmitting step transmits, to the mobile communication terminal, the test signal which includes the radio resource region for each predetermined time interval and in which the position of the radio resource region in the frequency axis direction varies for each predetermined time interval.

9. The mobile communication terminal test method according to claim 8 ,
wherein the characteristic value conversion step converts the characteristic value of the response signal from the characteristic value corresponding to the time to the characteristic value corresponding to the frequency by replacing time corresponding to the characteristic value of the response signal with a frequency corresponding to the time, on the basis of the correspondence information between a predetermined time indicating the position of the radio resource region in the time axis direction and a predetermined frequency indicating the position of the radio resource region in the frequency axis direction.

10. The mobile communication terminal test method according to claim 8 , further comprising:
an average value acquisition step of calculating an average value of the characteristic values corresponding to the frequencies,
wherein the test signal transmitting step transmits, to the mobile communication terminal, a test signal in which the radio resource region groups are repeatedly arranged in the time axis direction, and
the frequency characteristic display step displays the average value of the characteristic values calculated in the average value acquisition step.

11. The mobile communication terminal test method according to claim 8 ,
wherein the test signal includes a radio resource region group in which the radio resource regions are continuous in at least one of the time axis direction and the frequency axis direction.

12. The mobile communication terminal test method according to claim 8 ,
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Assignees

• Anritsu Corp

Inventors

• Otonari Nobutoshi
• Inoue Kenichi
• Iida Hiroaki

Classifications

• H04L43/50 Primary

  Testing arrangements · CPC title

• H04L43/045

  for graphical visualisation of monitoring data · CPC title

• H04B17/0085

  using test signal generators · CPC title

• H04B17/14

  of the whole transmission and reception path, e.g. self-test loop-back · CPC title

• H04B17/00

  Monitoring; Testing (of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07) · CPC title