Patentable/Patents/US-9270439
US-9270439

Method and system for transmitting channel state information in wireless communication systems

PublishedFebruary 23, 2016
Assigneenot available in USPTO data we have
Inventorsnot available in USPTO data we have
Technical Abstract

A base station includes a transmit path circuitry to transmit an uplink grant in a DCI format to a subscriber station. The base station also includes a receive path circuitry to receive only UCI on a PUSCH from a subscriber station when the uplink grant includes a MCS of an enabled transport block (TB) with a value of 29, or a redundancy version of the PUSCH with a value of 1; a CSI request field with a non-zero value; and a total number of physical resource blocks allocated for the subscriber station, NPRB, with a value less than or equal to a threshold number of physical resource blocks, TPRB. TPRB is based at least partly upon one of a total number of CSI information bits to be transmitted on the PUSCH, Ntotal, and a number of DL CCs reported in a current CSI reporting, NCCs.

Patent Claims
28 claims

Legal claims defining the scope of protection, as filed with the USPTO.

1

1. A base station, comprising: receive path circuitry configured to receive only Uplink Control Information (UCI) on a Physical Uplink Shared CHannel (PUSCH) from a subscriber station when an uplink grant to the subscriber station includes: a modulation and coding scheme (MCS) of an enabled transport block (TB) with a value of 29, a channel state information (CSI) request field with a non-zero value, and a total number of physical resource blocks N PRB allocated for the subscriber station with a value less than or equal to a threshold number of physical resource blocks T PRB , wherein the threshold number of physical resource blocks varies based at least partly upon a number of downlink component carriers (DL CCs) reported in current CSI reporting.

2

2. The base station according to claim 1 , wherein the CSI request field has a non-zero value when carrier aggregation is configured.

3

3. The base station according to claim 1 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured.

4

4. The base station according to claim 1 , wherein the CSI request field has a non-zero value when carrier aggregation is configured and a Downlink Control Information (DCI) is transmitted in a search space specific to the subscriber station.

5

5. The base station according to claim 1 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured or a Downlink Control Information (DCI) is transmitted in a search space specific to a cell.

6

6. The base station according to claim 1 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, two bit value set for CSI reporting.

7

7. The base station according to claim 1 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, one bit value set for CSI reporting.

8

8. A method, comprising: receiving Uplink Control Information (UCI) at a base station on a Physical Uplink Shared CHannel (PUSCH) from a subscriber station when an uplink grant to the subscriber station includes: a modulation and coding scheme (MCS) of an enabled transport block (TB) with a value of 29, a channel state information (CSI) request field with a non-zero value, and a total number of physical resource blocks N PRB allocated for the subscriber station with a value less than or equal to a threshold number of physical resource blocks T PRB , wherein the threshold number of physical resource blocks varies based at least partly upon a number of downlink component carriers (DL CCs) reported in current CSI reporting.

9

9. The method according to claim 8 , wherein the CSI request field has a non-zero value when carrier aggregation is configured.

10

10. The method according to claim 8 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured.

11

11. The method according to claim 8 , wherein the CSI request field has a non-zero value when carrier aggregation is configured and a Downlink Control Information (DCI) is transmitted in a search space specific to the subscriber station.

12

12. The method according to claim 8 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured or a Downlink Control Information (DCI) is transmitted in a search space specific to a cell.

13

13. The method according to claim 8 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, two bit value set for CSI reporting.

14

14. The method according to claim 8 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, one bit value set for CSI reporting.

15

15. A subscriber station, comprising: a transmitter configured to transmit Uplink Control Information (UCI) on a Physical Uplink Shared CHannel (PUSCH) to a base station when an uplink grant to the subscriber station includes: a modulation and coding scheme (MCS) of an enabled transport block (TB) with a value of 29, a channel state information (CSI) request field with a non-zero value, and a total number of physical resource blocks N PRB allocated for the subscriber station with a value less than or equal to a threshold number of physical resource blocks T PRB , wherein the threshold number of physical resource blocks varies based at least partly upon a number of downlink component carriers (DL CCs) reported in current CSI reporting.

16

16. The subscriber station according to claim 15 , wherein the CSI request field has a non-zero value when carrier aggregation is configured.

17

17. The subscriber station according to claim 15 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured.

18

18. The subscriber station according to claim 15 , wherein the CSI request field has a non-zero value when carrier aggregation is configured and a Downlink Control Information (DCI) is transmitted in a search space specific to the subscriber station.

19

19. The subscriber station according to claim 15 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured or a Downlink Control Information (DCI) is transmitted in a search space specific to a cell.

20

20. The subscriber station according to claim 15 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, two bit value set for CSI reporting.

21

21. The subscriber station according to claim 15 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, one bit value set for CSI reporting.

22

22. A method, comprising: transmitting only Uplink Control Information (UCI) to a base station on a Physical Uplink Shared CHannel (PUSCH) from a subscriber station when an uplink grant to the subscriber station includes: a modulation and coding scheme (MCS) of an enabled transport block (TB) with a value of 29, a channel state information (CSI) request field with a non-zero value, and a total number of physical resource blocks N PRB allocated for the subscriber station with a value less than or equal to a threshold number of physical resource blocks T PRB , wherein the threshold number of physical resource blocks varies based at least partly upon a number of downlink component carriers (DL CCs) reported in current CSI reporting.

23

23. The method according to claim 22 , wherein the CSI request field has a non-zero value when carrier aggregation is configured.

24

24. The method according to claim 22 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured.

25

25. The method according to claim 22 , wherein the CSI request field has a non-zero value when carrier aggregation is configured and a Downlink Control Information (DCI) is transmitted in a search space specific to the subscriber station.

26

26. The method according to claim 22 , wherein the CSI request field has a non-zero value when either carrier aggregation is not configured or a Downlink Control Information (DCI) is transmitted in a search space specific to a cell.

27

27. The method according to claim 22 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, two bit value set for CSI reporting.

28

28. The method according to claim 22 , wherein the total number of physical resource blocks N PRB allocated for the subscriber station is less than or equal to 4 when the CSI request field has a non-zero, one bit value set for CSI reporting.

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Patent Metadata

Filing Date

March 2, 2015

Publication Date

February 23, 2016

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Cite as: Patentable. “Method and system for transmitting channel state information in wireless communication systems” (US-9270439). https://patentable.app/patents/US-9270439

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