Technique for testing LTE-advanced carrier aggregation receiver characteristics

Patent metadata

Field	Value
Publication number	US-10091677-B2
Application number	US-201514635695-A
Country	US
Kind code	B2
Filing date	Mar 2, 2015
Priority date	Mar 11, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

An approach for testing LTE-Advanced CA receiver characteristics for 3DL CA and beyond, wherein the approach facilitates the limiting of test resources, such as test time, while at the same time optimizing test coverage is provided. A one non-measured downlink carrier, from a set of downlink (DL) carriers, is established as a primary component carrier. A first DL carrier and a second DL carrier, from the set of DL carriers, are established as secondary component carriers. Test measurements for the first DL carrier and the second DL carrier are simultaneously performed. The set of DL carriers forms one of a 3DL, 4DL and 5DL CA operating band set comprising at least three downlink carriers.

First claim

What is claimed is:

1. A method for testing LTE-Advanced Carrier Aggregation (CA) receiver characteristics, comprising:
establishing, from a set of downlink (DL) carriers, a one non-measured DL carrier as a primary component carrier;
establishing, from the set of DL carriers, a first DL carrier and a second DL carrier as secondary component carriers; and
simultaneously performing test measurements for the first DL carrier and the second DL carrier by simultaneously providing a first interfering signal for the first DL carrier and a second interfering signal for the second DL carrier, wherein the first and second interfering signals are simultaneously provided according to a common frequency sweep pattern; and
wherein the set of DL carriers forms one of a 3DL, 4DL and 5DL CA operating band set comprising at least three downlink carriers.

2. The method according to claim 1 , wherein the primary component carrier and the secondary component carriers are each established according to one of intra-band contiguous CA, intra-band non-contiguous CA, and inter-band CA.

3. The method according to claim 1 , wherein the test measurements are implemented for at least one of conformance tests, in-band blocking tests, out-of-band blocking tests, adjacent channel sensitivity tests, narrow band blocking tests, spurious response tests and reference sensitivity level tests.

4. The method according to claim 1 , wherein the simultaneous performance of the test measurements comprises providing one or more impairments to each of the first and second DL carriers, wherein the impairment(s) comprise one or more of delay, jitter, loss, corruption, duplication and re-ordering.

5. The method according to claim 1 , further comprising:
performing a set of test cases for the first and second DL carriers, wherein the set of test cases excludes at least one test case for at least one 2DL CA operating band set as being redundant in view of at least one test case for at least one 3DL, 4DL or 5DL CA operating band set.

6. The method according to claim 1 , further comprising:
performing a set of test cases for the first and second DL carriers, wherein the set of test cases excludes at least one test case for at least one 1DL operating band as being redundant in view of at least one test case for at least one 3DL, 4DL or 5DL CA operating band set.

7. A non-transitory computer-readable storage medium, storing executable instructions for performing testing of LTE-Advanced Carrier Aggregation (CA) receiver characteristics, wherein the executable instructions are configured, upon execution by one or more processors, to cause an apparatus to perform the method of claim 1 .

8. A method for testing LTE-Advanced Carrier Aggregation (CA) receiver characteristics, comprising:
establishing, from a set of downlink (DL) carriers, a one non-measured DL carrier as a primary component carrier;
establishing, from the set of DL carriers, a first DL carrier and a second DL carrier as secondary component carriers; and
simultaneously performing test measurements for the first DL carrier and the second DL carrier; and
performing a set of test cases for the first and second DL carriers, wherein the set of test cases excludes at least one specific combination of uplink configuration parameters from a predefined pattern of uplink configuration parameters for the primary component carrier; and
wherein the set of DL carriers forms one of a 3DL, 4DL and 5DL CA operating band set comprising at least three downlink carriers.

9. A method for testing LTE-Advanced Carrier Aggregation (CA) receiver characteristics, comprising:
selecting two or more downlink (DL) carriers of a CA operating band set defining at least three DL carriers, including a first DL carrier and a second DL carrier;
establishing at least one non-measured DL carrier from the CA operating band set;
establishing an uplink (UL) carrier associated with the non-measured DL carrier; and
simultaneously performing test measurements for the selected two or more DL carriers by simultaneously providing a first interfering signal for the first DL carrier and a second interfering signal for the second DL carrier, wherein the first and second interfering signals are simultaneously provided according to a common frequency sweep pattern.

10. A test system for testing LTE-Advanced Carrier Aggregation CA receiver characteristics, comprising:
a primary component control processor configured to establish, from a set of downlink (DL) carriers, a one non-measured DL carrier as a primary component carrier;
a secondary component control processor configured to establish, from the set of DL carriers, a first DL carrier and a second DL carrier as secondary component carriers; and
a measurement processor configured to simultaneously perform test measurements for the first DL carrier and the second DL carrier; and
a first signal generator and a second signal generator, wherein the first and second signal generators are configured to simultaneously provide, respectively, a first interfering signal for the first DL carrier and a second interfering signal for the second DL carrier, and wherein the first signal generator and the second signal generator is each configured to respectively provide the first interfering signal and the second interfering signal according to a common frequency sweep pattern; and
wherein the set of DL carriers forms one of a 3DL, 4DL and 5DL CA operating band set comprising at least three downlink carriers.

11. The test system according to claim 10 , wherein each of the primary and secondary component control processors is configured to establish, respectively, the primary component carrier and secondary component carriers according to one of intra-band contiguous CA, intra-band non-contiguous CA, and inter-band CA.

12. The test system according to claim 10 , further comprising:
a signal impairment generator configured to provide one or more impairments to each of the first and second DL carriers, wherein the impairments comprising one or more of delay, jitter, loss, corruption, duplication and re-ordering.

Assignees

• Rohde & Schwarz

Inventors

• Baeder Uwe

Classifications

• H04L5/0041

  Frequency-non-contiguous · CPC title

• H04W24/08 Primary

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

• H04L5/0039

  Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another · CPC title

• H04L1/205

  jitter monitoring · CPC title

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title