Methods, systems, and computer readable media for frequency selective channel modeling

1. A system for frequency selective channel modeling to test the response of a device under test, the system comprising:

a network equipment test device including at least one processor;

a user equipment (UE) emulator implemented by the at least one processor and configured to emulate a plurality of UEs that attach to and communicate with a device under test; and

a frequency selective channel modeler configured to receive resource scheduling information for the UEs from the device under test, to determine channel performance categories for the emulated UEs using the resource scheduling information and to determine values for channel quality parameters for the emulated UEs using the channel performance categories, wherein the emulated UEs communicate the channel quality parameters to the device under test.

2. The system of claim 1 wherein the frequency selective channel modeler uses stored mappings that map resource blocks to the channel performance categories, irrespective of UE assignment to resource blocks, to determine the channel performance categories for the emulated UEs.

3. The system of claim 1 wherein the frequency selective channel modeler uses stored mappings between the channel performance categories and the channel quality parameters to determine the channel quality parameters for the emulated UEs.

4. The system of claim 1 wherein the channel performance categories include good, poor, and medium performance categories on a per resource block basis.

5. The system of claim 1 wherein the channel quality parameters include at least one of: block error rate (BLER), channel quality indicator (CQI), rank indicator (RI), precoding matrix indicator (PMI), uplink (UL) power, uplink power head room (ULPHR).

6. The system of claim 5 wherein the frequency selective channel modeler assigns a low CQI value, a low UL power, and a high DL BLER to a UE assigned to a resource block categorized in a poor channel performance category.

7. The system of claim 5 wherein the frequency selective channel modeler assigns a medium CQI value, a medium UL power, and a medium DL BLER to a UE assigned to a resource block categorized in a medium channel performance category.

8. The system of claim 5 wherein the frequency selective channel modeler assigns a high CQI value, a high UL power, and a low DL BLER to a UE assigned to a resource block with a good channel performance category.

9. The system of claim 1 wherein the network equipment test device assigns at least some of the emulated UEs to a channel model, wherein the channel models include additive white Gaussian noise (AWGN), extended pedestrian A (EPA), extended typical urban (ETU), and high speed train (HST).

10. The system of claim 1 wherein the frequency selective channel modeler assigns performance categories to uplink and downlink resource blocks.

11. The system of claim 1 wherein the network equipment test device monitors resource block scheduling by the device under test in response to the channel quality parameters communicated by the emulated UEs to the device under test.

12. A method for frequency selective channel modeling to test the response of a device under test, the method comprising:

emulating a plurality of user equipment (UEs);

attaching the emulated UEs to a device under test;

receiving resource scheduling information for the UEs from the device under test;

determining channel characteristics for the emulated UEs using the resource scheduling information and channel performance categories;

using the channel performance categories to determine values for channel quality parameters for the emulated UEs; and

communicating the channel quality parameters from the emulated UEs to the device under test.

13. The method of claim 12 wherein determining the channel performance categories includes using stored mappings that map resource blocks to the channel performance categories irrespective of UE assignment to resource blocks.

14. The method of claim 12 wherein using the channel performance categories to determine values for the channel quality parameters includes using stored mappings between the channel performance categories and the channel quality parameters.

15. The method of claim 12 wherein the channel performance categories indicate good, low, and medium channel performance categories on a per resource block basis.

16. The method of claim 12 wherein the channel quality parameters include at least one of: block error rate (BLER), channel quality indicator (CQI), rank indicator (RI), precoding matrix indicator (PMI), uplink (UL) power, uplink head room (ULHR).

17. The method of claim 16 comprising assigning a low CQI value, a low UL power, and a high DL BLER to a UE assigned to a resource block with a low channel performance category.

18. The method of claim 16 comprising assigning a medium CQI value, a medium UL power, and a medium DL BLER to a UE assigned to a resource block with a medium channel performance category.

19. The method of claim 16 comprising assigning a high CQI value, a high UL power, and a low DL BLER to a UE assigned to a resource block with a good channel performance category.

20. The method of claim 12 comprising assigning at least some of the emulated UEs to a channel model, wherein the channel models include additive white Gaussian noise (AWGN), extended pedestrian A (EPA), extended typical urban (ETU), and high speed train (HST).

21. The method of claim 12 comprising assigning the channel performance categories to uplink and downlink resource blocks.

22. The method of claim 12 comprising monitoring resource block scheduling by the device under test to the channel quality parameters communicated by the emulated UEs to the device under test.

23. A non-transitory computer readable medium having stored thereon executable instructions that when executed by the processor of a computer control the computer to perform steps comprising:

emulating a plurality of user equipment (UEs);

attaching the emulated UEs to a device under test;

receiving resource scheduling information for the UEs from the device under test;

determining channel characteristics for the emulated UEs using the resource scheduling information and channel performance categories;

using the channel performance categories to determine values for channel quality parameters for the emulated UEs; and

communicating the channel quality parameters from the emulated UEs to the device under test.