Abstract
Embodiments of the disclosure provide a system and method for providing channel feedback information (CFI) from a user equipment device to a base station. CFI is transmitted from the user equipment device on first and second communication channels. The user equipment device is operable to measure the channel rank of a downlink channel and to select a preferred channel rank that is used to configure the CFI that is transmitted to the base station. The base station is operable to use the preferred channel rank to interpret the CFI transmitted by the user end device.
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Specification Information
Specification Information
Technologies
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Technologies
Feedback
Product
Use Cases
Wireless communication
Services
Claim
1. A method for processing signals in a communication system comprising a base station and one or more user equipment devices, the method comprising:
receiving a first set of channel feedback information (CFI), including a first rank report, from a user equipment device on a first communication channel;
receiving a second set of CFI, including a second rank report, from said user equipment device on a second communication channel;
comparing said first and second rank reports to determine the most recent rank report; and
using the most recent rank report to interpret said first and second sets of CFI.', 'receiving a first set of channel feedback information (CFI), including a first rank report, from a user equipment device on a first communication channel;', 'receiving a second set of CFI, including a second rank report, from said user equipment device on a second communication channel;', 'comparing said first and second rank reports to determine the most recent rank report; and', 'using the most recent rank report to interpret said first and second sets of CFI.
2. The method of claim 1, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH).
3. The method of claim 1, wherein one of said first and second communication channels is a physical uplink control channel (PUCCH).
4. A user equipment device comprising:
a channel feedback report generator operable to generate a first set of measured CFI, including a first measured rank, and a second set of measured CFI, including a second measured rank;
processing logic operable to select either of said first measured rank or said second measured rank as a preferred rank, said processing logic further being operable to use said preferred rank to select the format of a first CFI report and the format of a second CFI report; and
transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.', 'a channel feedback report generator operable to generate a first set of measured CFI, including a first measured rank, and a second set of measured CFI, including a second measured rank;', 'processing logic operable to select either of said first measured rank or said second measured rank as a preferred rank, said processing logic further being operable to use said preferred rank to select the format of a first CFI report and the format of a second CFI report; and', 'transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.
5. The user equipment device of claim 4, wherein said first set of CFI is transmitted on a PUSCH and said second set of CFI is transmitted on a PUCCH.
6. The user equipment device of claim 4, wherein said processing logic selects the preferred rank based on measured channel matrices associated with said first and second measured CFI reports.
7. The user equipment device of claim 4, wherein said processing logic selects the preferred rank based on measured channel quality indicators (CQIs) associated with said first and second measured ranks.
8. A user equipment device comprising:
a channel feedback report generator operable to generate a first set of measured CFI, including a first measured rank, and a second set of measured CFI, including a second measured rank;
processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and
transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.', 'a channel feedback report generator operable to generate a first set of measured CFI, including a first measured rank, and a second set of measured CFI, including a second measured rank;', 'processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and', 'transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.
9. The user equipment device of claim 8, wherein one of said first and second communication channels is a PUSCH
10. The user equipment device of claim 8, wherein one of said first and second communication channels is a PUCCH
11. A method for processing signals in a communication system comprising a base station and one or more user equipment devices, the method comprising:
receiving a first set channel feedback information (CFI), including a first rank report, from a user equipment device on a first communication channel;
receiving a second set of CFI, including a second rank report, from said user equipment device on a second communication channel;
wherein, during a first reporting time interval, said first and second rank reports are compared to determine the most recent rank report, said first and second rank reports are dependent, and said most recent rank report is used to interpret CFI data transmitted on said first communication channel and to interpret CFI data transmitted on a second communication channel; and
wherein, during a second reporting time interval, said first and second rank reports are independent and said first rank report is used to interpret CFI data transmitted on a first communication channel and said second rank report is used to interpret CFI transmitted on a second communication channel.', 'receiving a first set channel feedback information (CFI), including a first rank report, from a user equipment device on a first communication channel;', 'receiving a second set of CFI, including a second rank report, from said user equipment device on a second communication channel;', 'wherein, during a first reporting time interval, said first and second rank reports are compared to determine the most recent rank report, said first and second rank reports are dependent, and said most recent rank report is used to interpret CFI data transmitted on said first communication channel and to interpret CFI data transmitted on a second communication channel; and', 'wherein, during a second reporting time interval, said first and second rank reports are independent and said first rank report is used to interpret CFI data transmitted on a first communication channel and said second rank report is used to interpret CFI transmitted on a second communication channel
12. The method of claim 11, wherein the reporting time intervals during which said CFI reports are transmitted using independent or dependent modes is controlled semi-statically
13. The method of claim 11, wherein the independent or dependent reporting mode is determined using a plurality of parameters stored in a parameter table
14. The method of claim 11, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH)
15. The method of claim 11, wherein one of said first and second communication channels is a physical uplink control channel (PUCCH)
16. The method of claim 11, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH) and the other of said first and second communication channels is a physical uplink control channel (PUCCH)
17. The user equipment device of claim 4, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH)
18. The user equipment device of claim 4, wherein one of said first and second communication channels is a physical uplink control channel (PUCCH)
19. The user equipment device of claim 4, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH) and the other of said first and second communication channels is a physical uplink control channel (PUCCH).
20. A user equipment device comprising:
a channel feedback report generator operable to generate a first set of measured CFI, according to a first CFI feedback mode, including a first measured rank, and a second set of measured CF, according to a second CFI feedback mode, including a second measured rank;
processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and
transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.', 'a channel feedback report generator operable to generate a first set of measured CFI, according to a first CFI feedback mode, including a first measured rank, and a second set of measured CF, according to a second CFI feedback mode, including a second measured rank;', 'processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and', 'transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.
21. The user equipment device of claim 20, wherein one of said first and second communication channels is a PUSCH.
22. The user equipment device of claim 20, wherein one of said first and second communication channels is a PUCCH.
23. The user equipment device of claim 20, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH) and the other of said first and second communication channels is a physical uplink control channel (PUCCH).
24. The user equipment device of claim 20, wherein one of said first and second CFI feedback mode is a wideband CFI feedback mode.
25. The user equipment device of claim 20, wherein one of said first and second CFI feedback mode is a frequency selective CFI feedback mode.
26. The user equipment device of claim 20, wherein said first CFI feedback mode is a wideband CFI feedback mode and said second CFI feedback mode is a frequency selective CFI feedback mode.
27. The user equipment device of claim 20, wherein one of said first and second CFI feedback mode is a periodic CFI feedback mode.
28. The user equipment device of claim 20, wherein one of said first and second CFI feedback mode is an aperiodic CFI feedback mode.
29. The user equipment device of claim 20, wherein said first CFI feedback mode is a periodic CFI feedback mode and said second CFI feedback mode is an aperiodic CFI feedback mode.
30. A user equipment device comprising:
a channel feedback report generator operable to generate a first set of measured CFI, comprising a frequency-selective CFI of a first type, including a first measured rank, and a second set of measured CF, comprising a frequency-selective CFI of a second type, including a second measured rank;
processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and
transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.', 'a channel feedback report generator operable to generate a first set of measured CFI, comprising a frequency-selective CFI of a first type, including a first measured rank, and a second set of measured CF, comprising a frequency-selective CFI of a second type, including a second measured rank;', 'processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and', 'transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.
31. The user equipment device of claim 30, wherein one of said first and second communication channels is a PUSCH.
32. The user equipment device of claim 30, wherein one of said first and second communication channels is a PUCCH.
33. The method of claim 11, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH) and the other of said first and second communication channels is a physical uplink control channel (PUCCH).
34. A user equipment device comprising:
a channel feedback report generator operable to generate a first set of measured CFI, according to a first scheduling mode, including a first measured rank, and a second set of measured CF, according to a second scheduling mode, including a second measured rank;
processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and
transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.', 'a channel feedback report generator operable to generate a first set of measured CFI, according to a first scheduling mode, including a first measured rank, and a second set of measured CF, according to a second scheduling mode, including a second measured rank;', 'processing logic operable to use the first measured rank to select the format of a first CFI report and the second measured rank to select the format of the second CFI report; and', 'transmission circuitry operable to transmit said first CFI report on a first communication channel and to transmit said second CFI report on a second communication channel.
35. The user equipment device of claim 34, wherein one of said first and second communication channels is a PUSCH.
36. The user equipment device of claim 34, wherein one of said first and second communication channels is a PUCCH.
37. The method of claim 11, wherein one of said first and second communication channels is a physical uplink shared channel (PUSCH) and the other of said first and second communication channels is a physical uplink control channel (PUCCH).
38. The user equipment device of claim 34, wherein one of said first and second scheduling mode is a wideband CFI feedback mode.
39. The user equipment device of claim 34, wherein one of said first and second scheduling mode is a frequency selective CFI feedback mode.
40. The user equipment device of claim 34, wherein said first scheduling mode is a wideband CFI feedback mode and said second scheduling mode is a frequency selective CFI feedback mode.']
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