USRE47631EActiveUtility

System and method for PUCCH subband feedback signaling in a wireless network

50
Assignee: SAMSUNG ELECTRONICS CO LTDPriority: Sep 17, 2010Filed: Feb 1, 2017Granted: Oct 1, 2019
Est. expirySep 17, 2030(~4.2 yrs left)· nominal 20-yr term from priority
Inventors:Lingjia LiuJianzhong Zhang
H04L 1/0026H04L 1/0027H04B 7/0636H04L 1/0031H04B 7/0623H04B 7/0486H04B 7/0481
50
PatentIndex Score
0
Cited by
28
References
40
Claims

Abstract

A mobile station for use in a wireless network. The mobile station transmits feedback reports to a base station of the wireless network. The feedback reports comprise a first feedback report, a second feedback report and a third feedback report. The first feedback report includes a precoder type indication (PTI) value that indicates at least one of a period of the second feedback report and a period of the third feedback report. The PTI value indicates a ratio of the second feedback report period to the third feedback report period. The PTI value also indicates the selected feedback information contained in the second feedback report and the third feedback report.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. For use in a wireless network, a mobile station operable to transmit feedback reports to a base station of the wireless network,
 the feedback reports comprising a first feedback report, a second feedback report and a third feedback report,   wherein the first feedback report includes a precoder type indication (PTI) value and   wherein at least one of a period of the second feedback report and a period of the third feedback report is indicated by the PTI value.   
     
     
       2. The mobile station as set forth in  claim 1 , wherein the PTI value indicates a ratio of the second feedback report period to the third feedback report period. 
     
     
       3. The mobile station as set forth in  claim 2 , wherein when the PTI value is 0, the ratio is signaled by a higher-layer message and when the PTI value is 1, the ratio is given by J*K+1, where J is the number of bandwidth parts and K is a constant signaled by a higher layer message. 
     
     
       4. The mobile station as set forth in  claim 1 , wherein the second feedback report and the third feedback report include selected feedback information, the selected feedback information comprising at least one of wideband feedback information and subband feedback information. 
     
     
       5. The mobile station as set forth in  claim 4 , wherein the PTI value indicates the selected feedback information. 
     
     
       6. A method for use in a mobile station operable to transmit feedback reports to a base station of a wireless network, the method including:
 transmitting to the base station a first feedback report including a precoder type indication (PTI) value;   transmitting to the base station a second feedback report; and   transmitting to the base station a third feedback report,   wherein the PTI value indicates at least one of a period of the second feedback report and a period of the third feedback report.   
     
     
       7. The method as set forth in  claim 6 , wherein the PTI value indicates a ratio of the second feedback report period to the third feedback report period. 
     
     
       8. The method as set forth in  claim 7 , wherein when the PTI value is 0, the ratio is signaled by a higher-layer message and when the PTI value is 1, the ratio is given by J*K+1, where J is the number of bandwidth parts and K is a constant signaled by a higher layer message. 
     
     
       9. The method as set forth in  claim 6 , wherein the second feedback report and the third feedback report include selected feedback information, the selected feedback information comprising at least one of wideband feedback information and subband feedback information. 
     
     
       10. The method as set forth in  claim 9 , wherein the PTI value indicates the selected feedback information. 
     
     
       11. For use in a wireless network, a base station operable to receive feedback reports transmitted by a mobile station,
 the feedback reports comprising a first feedback report, a second feedback report and a third feedback report,   wherein the base station is configured to identify in the first feedback report a precoder type indication (PTI) value, and   wherein the base station is configured to use the PTI value to determine at least one of a period of the second feedback report and a period of the third feedback report.   
     
     
       12. The base station as set forth in  claim 11 , wherein base station is configured to use the PTI value to determine a ratio of the second feedback report period to the third feedback report period. 
     
     
       13. The base station as set forth in  claim 12 , wherein the base station is configured to receive from the mobile station a control signal indicating the ratio. 
     
     
       14. The base station as set forth in  claim 11 , wherein the second feedback report and the third feedback report include selected feedback information, the selected feedback information comprising at least one of wideband feedback information and subband feedback information. 
     
     
       15. The base station as set forth in  claim 14 , wherein the base station is configured to use the PTI value to determine the selected feedback information. 
     
     
       16. A method for use in a base station of a wireless network operable to receive feedback reports transmitted by a mobile station, the method comprising:
 receiving a first feedback report;   identifying in the first feedback report a precoder type indication (PTI) value;   determining from the PTI value at least one of a period of a second feedback report and a period of a third feedback report;   receiving the second feedback report; and   receiving the third feedback report.   
     
     
       17. The method as set forth in  claim 16 , further comprising determining a ratio of the second feedback report period to the third feedback report period. 
     
     
       18. The method as set forth in  claim 17 , wherein the base station receives from the mobile station a control signal indicating the ratio. 
     
     
       19. The method as set forth in  claim 16 , wherein the second feedback report and the third feedback report include selected feedback information, the selected feedback information comprising at least one of wideband feedback information and subband feedback information. 
     
     
       20. The method as set forth in  claim 19 , further comprising determining from the PTI value the selected feedback information. 
     
     
       21. A method for transmitting channel status information (CSI) in a communication system, the method comprising:
 reporting a first precoder matrix index (PMI);   reporting a precoder type indicator (PTI); and   reporting a second PMI,   wherein the second PMI is selected based on codebook sub-sampling conditioned on a rank indicator (RI).   
     
     
       22. The method of claim 21, wherein the second PMI is reported with a subband channel quality indicator (CQI). 
     
     
       23. The method of claim 21, wherein the PTI is 1. 
     
     
       24. The method of claim 21, wherein, when the RI is one of 2, 3 and 4, the second PMI is selected based on the codebook sub-sampling. 
     
     
       25. The method of claim 24, wherein when the RI is 1, a number of bits of the second PMI is 4, and when the RI is one of 2, 3 and 4, the number of bits of the second PMI is 2. 
     
     
       26. A method for receiving channel status information (CSI) in a communication system, comprising:
 receiving a first precoder matrix index (PMI);   receiving a precoder type indicator (PTI); and   receiving a second PMI,   wherein the second PMI is selected based on codebook sub-sampling conditioned on a rank indicator (RI).   
     
     
       27. The method of claim 26, wherein the second PMI is received with a subband channel quality indicator (CQI). 
     
     
       28. The method of claim 26, wherein the PTI is 1. 
     
     
       29. The method of claim 26, wherein when the RI is one of 2, 3 and 4, the second PMI is selected based on the codebook sub-sampling. 
     
     
       30. The method of claim 29, wherein when the RI is 1, a number of bits of the second PMI is 4, and when the RI is one of 2, 3 and 4, the number of bits of the second PMI is 2. 
     
     
       31. A terminal for transmitting channel status information in a communication system, the terminal comprising:
 a transceiver for transmitting signals to and from a base station; and   a controller configured to control to report a first precoder matrix index (PMI), report a precoder type indicator (PTI), and report a second PMI, and   wherein the second PMI is selected based on codebook sub-sampling conditioned on a rank indicator (RI).   
     
     
       32. The terminal of claim 31, wherein the second PMI is received with a subband channel quality indicator(CQI). 
     
     
       33. The terminal of claim 31, wherein the PTI is 1. 
     
     
       34. The terminal of claim 31, wherein when the RI is one of 2, 3 and 4, the second PMI is selected based on the codebook sub-sampling. 
     
     
       35. The terminal of claim 34, wherein when the RI is 1, a number of bits of the second PMI is 4, and when the RI is one of 2, 3 and 4, the number of bits of the second PMI is 2. 
     
     
       36. A base station for receiving channel status information (CSI) in a communication system, the base station comprising:
 a transceiver for transmitting signals to and from the base station; and   a controller configured to control the transceiver to receive a first precoder matrix index (PMI), receive a precoder type indicator (PTI), and receive a second PMI, and   wherein the second PMI is selected based on codebook sub-sampling conditioned on a rank indicator (RI).   
     
     
       37. The base station of claim 36, wherein the second PMI is received with a subband channel quality indicator (CQI). 
     
     
       38. The base station of claim 36, wherein the PTI is 1. 
     
     
       39. The base station of claim 36, wherein when the RI is one of 2, 3 and 4, the second PMI is selected based on the codebook sub-sampling. 
     
     
       40. The base station of claim 39, wherein when the RI is 1, a number of bits of the second PMI is 4, and when the RI is one of 2, 3 and 4, the number of bits of the second PMI is 2.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.