Method for testing transmission modes of a wireless communication device

Patent metadata

Field	Value
Publication number	US-8965300-B2
Application number	US-201314137211-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Apr 15, 2008
Publication date	Feb 24, 2015
Grant date	Feb 24, 2015

Abstract

A method for testing transmission modes of a wireless communication device. According to the method, a switching range is determined in a parameter space in a test device. The parameter of the parameter space describes the quality of transmission and influences a recommendation for a transmission mode to be adjusted in a device to be tested. The switching range is a subspace of the parameter space and contains at least one switching limit for the recommendation for the subsequent transmission mode to be adjusted. In a further step, random parameter points from the switching range are generated depending on a probability distribution which is defined for the switching range. A signal is generated for every parameter point and has a transmission mode determined by the parameter point and is transmitted to the device to be tested. The device to be tested then transmits one response signal per received signal to the test device, the response signal containing a recommendation for a subsequent transmission mode to be adjusted. All recommendations from all received response signals are evaluated in the test device.

First claim

What is claimed is:

1. A method for testing a device for wireless communication in a radio network, consisting of the steps of:
establishing a switching range in a parameter space which contains at least one parameter which describes a quality of a transmission and influences a transmission state which is to be adjusted, wherein the switching range contains at least one switching limit for transmission state to be adjusted;
establishing a number of random parameter points in the switching range in a test device by implementing a probability distribution which is defined on the switching range;
transmitting each parameter point in a respective signal to a device to be tested;
transmitting back to the test device a respective response signal per received signal which contains the transmission state to be adjusted; and
evaluating transmission states, which are to be adjusted, from response signals received by the test device.

2. The method as claimed in claim 1 , wherein the parameter space contains, in addition to the quality of the transmission, a recommendation of a transmission state.

3. The method as claimed in claim 1 , wherein the method tests a base station.

4. The method as claimed in claim 3 , wherein the parameter values are possible return values of a mobile radio device to a base station.

5. The method as claimed in claim 1 , wherein additional switching ranges are established and are evaluated according to claim 1 .

6. The method as claimed in claim 1 , wherein a switching limit which is located in an n-dimensional switching range forms an (n−1)-dimensional subspace of the switching range.

7. The method as claimed in claim 1 , wherein the probability distribution, which is defined on the switching range, is a Gauss distribution in the one-dimensional parameter space and in the multi-dimensional parameter space the probability distribution defined on the switching range follows a Gauss distribution in the direction orthogonal to the switching limit and the transient directions thereof follow a uniform distribution.

8. The method as claimed in claim 1 , wherein the transmission states which are transmitted by the response signal and which are to be adjusted or their recommendations are statistically evaluated.

9. The method as claimed in claim 8 , wherein the resolution of the statistical evaluation is determined by the number of parameter points.

10. The method as claimed in claim 1 , wherein the number of parameter points is determined by a stop criterion.

Assignees

• Rohde & Schwarz

Inventors

• Pauly Andreas
• Schlienz Juergen

Classifications

• H04W24/08 Primary

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04L1/0001 Primary

  Systems modifying transmission characteristics according to link quality, e.g. power backoff (adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04) · CPC title

• H04L1/24

  Testing correct operation · CPC title