Abstract
For certain embodiments of this application a method and apparatus for generating pilots in a wireless multiple-input multiple output (MIMO) communication system is disclosed. The certain embodiments can include obtaining at least one pilot symbol for each antenna of a plurality of antennas obtaining an orthogonal sequence for each antenna in the plurality of antennas and covering the at least one pilot symbol for each antenna with the orthogonal sequence to obtain a sequence of covered pilot symbols for each antenna to obtain at least one covered pilot symbols for each of the plurality of antennas.
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Specification Information
Specification Information
Technologies
Family Information
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Technologies
Resource configuration Channel Status Information(CSI) Reporting Multiple-Input Multiple-Output(MIMO)/Massive MIMO
Product
Base Station (eNB/gNB)User Equipment (UE/Terminal)
Use Cases
Network OptimizationWireless communication
Services
Channel Quality Measurement/Estimation
Claim
1. A method of generating pilots in a wireless multiple-input multiple output (MIMO) communication system having a plurality of antennas, comprising:
obtaining at least one pilot symbol for each antenna of the plurality of antennas;
obtaining an orthogonal sequence for each antenna in the plurality of antennas; and
covering the at least one pilot symbol for each antenna with the orthogonal sequence to obtain a sequence of covered pilot symbols for each antenna to obtain at least one covered pilot symbol for each of the plurality of antennas.', 'obtaining at least one pilot symbol for each antenna of the plurality of antennas;', 'obtaining an orthogonal sequence for each antenna in the plurality of antennas; and', 'covering the at least one pilot symbol for each antenna with the orthogonal sequence to obtain a sequence of covered pilot symbols for each antenna to obtain at least one covered pilot symbol for each of the plurality of antennas.
2. The method of claim 1, wherein obtaining the orthogonal sequence comprises obtaining a different orthogonal sequence for each antenna.
3. The method of claim 1, further comprising transmitting a plurality of orthogonal pilots from the plurality of antennas.
4. The method of claim 1, wherein the orthogonal sequences are Walsh sequences.
5. The method of claim 4, wherein the Walsh sequences have a length of 1/W chips, wherein W is a total operating bandwidth of the system.
6. The method of claim 1, wherein obtaining the at least one pilot symbol comprises obtaining a same at least one pilot symbol for each of the plurality of antennas.
7. The method of claim 1, further comprising transmitting the at least one covered pilot symbol on each antenna from a predetermined set of subbands.
8. The method of claim 7, wherein the predetermined set of subbands are the same for each of the plurality of antennas.
9. The method of claim 1, further comprising transmitting the sequence of covered pilot symbols during predetermined time slots
10. The method of claim 9, wherein the predetermined time slots are the same for each of the plurality of antennas
11. The method of claim 1, further comprising applying a cyclic prefix to each covered pilot symbol
12. A wireless communication apparatus comprising:
a plurality of antennas;
means for obtaining at least one pilot symbol for each antenna in the plurality of antennas;
means for obtaining an orthogonal sequence for each antenna in the plurality of antennas; and
means for covering the at least one pilot symbol for each antenna with an orthogonal sequence to obtain a sequence of covered pilot symbols for each of the plurality of antennas.', 'a plurality of antennas;', 'means for obtaining at least one pilot symbol for each antenna in the plurality of antennas;', 'means for obtaining an orthogonal sequence for each antenna in the plurality of antennas; and', 'means for covering the at least one pilot symbol for each antenna with an orthogonal sequence to obtain a sequence of covered pilot symbols for each of the plurality of antennas
13. The apparatus of claim 12, wherein the means for obtaining the orthogonal sequence comprises means for obtaining a different orthogonal sequence for each antenna
14. The apparatus of claim 12, wherein the orthogonal sequences are Walsh sequences
15. The apparatus of claim 14, wherein the Walsh sequences have a length of 1/W chips, wherein W is a total operating bandwidth of the apparatus
16. The apparatus of claim 12, further comprising means for designating transmission of the covered pilot symbols on a predetermined set of subbands
17. The apparatus of claim 16, wherein the predetermined set of subbands are the same for each of the plurality of antennas
18. The apparatus of claim 12, further comprising means for transmitting the sequence of covered pilot symbols during predetermined time slots
19. The apparatus of claim 18, wherein the predetermined time slots are the same for each of the plurality of antennas.
20. The apparatus of claim 12, further comprising means for applying a cyclic prefix to each pilot symbol.
21. A wireless communication apparatus comprising:
a plurality of antennas;
a plurality of modulators coupled to the plurality of antennas; and
a transmit data processor, coupled to the plurality of modulators, that provides a plurality of covered pilot symbols for each antenna, wherein each covered pilot symbol is generated by covering a pilot symbol with an orthogonal sequence.', 'a plurality of antennas;', 'a plurality of modulators coupled to the plurality of antennas; and', 'a transmit data processor, coupled to the plurality of modulators, that provides a plurality of covered pilot symbols for each antenna, wherein each covered pilot symbol is generated by covering a pilot symbol with an orthogonal sequence.
22. The apparatus of claim 21, wherein a different orthogonal sequence is used for each antenna.
23. The apparatus of claim 21, wherein the orthogonal sequences are Walsh sequences.
24. The apparatus of claim 23, wherein the Walsh sequences have a length of 1/W chips, wherein W is a total operating bandwidth of the apparatus.
25. The apparatus of claim 21, wherein the pilot symbols are transmitted on a predetermined set of subbands.
26. The apparatus of claim 25, wherein the predetermined set of subbands are the same for each of the plurality of antennas.
27. The apparatus of claim 21, wherein the modulators apply a cyclic prefix to each pilot symbol.
28. The apparatus of claim 21, wherein a sequence of the covered pilot symbols are transmitted during predetermined time slots.
29. The apparatus of claim 28, wherein the predetermined time slots are the same for each of the plurality of antennas.
30. A method of generating pilots in a wireless multiple-input multiple output (MIMO) communication system, comprising:
generating at least one pilot symbol for each antenna of a plurality of antennas; and
applying an orthogonal sequence to each pilot symbol for each antenna to obtain orthogonal pilot symbols for each antenna.', 'generating at least one pilot symbol for each antenna of a plurality of antennas; and', 'applying an orthogonal sequence to each pilot symbol for each antenna to obtain orthogonal pilot symbols for each antenna.
31. The method of claim 30, further comprising generating a different orthogonal sequence for each antenna so that the pilot symbols of each antenna are orthogonal to pilot symbols of each other antenna.
32. The method of claim 30, further comprising transmitting the orthogonal pilot symbols from the plurality of antennas.
33. The method of claim 30, wherein the orthogonal sequences are Walsh sequences.
34. The method of claim 33, wherein the Walsh sequences have a length of 1/W chips, wherein W is a total operating bandwidth of the system.
35. The method of claim 30, wherein applying the orthogonal sequence to each pilot symbol for each antenna to obtain orthogonal pilot symbols for each antenna comprises obtaining a same pilot symbol for the plurality of antennas.
36. The method of claim 30, wherein the pilot symbols are transmitted during predetermined time slots.
37. The method of claim 36, wherein the predetermined time slots are the same for each of the plurality of antennas.
38. The method of claim 30, further comprising applying a cyclic prefix to each pilot symbol.
39. The method of claim 30, wherein the pilot symbols are transmitted on a predetermined set of subbands.
40. The method of claim 39, wherein the predetermined set of subbands are the same for each of the plurality of antennas.
41. A wireless communication apparatus comprising:
a plurality of antennas;
means for generating at least one pilot symbol for each antenna of the plurality of antennas; and
means for applying an orthogonal sequence to each pilot symbol for each antenna to obtain orthogonal pilot symbols for each antenna.', 'a plurality of antennas;', 'means for generating at least one pilot symbol for each antenna of the plurality of antennas; and', 'means for applying an orthogonal sequence to each pilot symbol for each antenna to obtain orthogonal pilot symbols for each antenna.
42. The apparatus of claim 41, further comprising means for obtaining a different orthogonal sequence for each antenna.
43. The apparatus of claim 41, wherein the orthogonal sequences are Walsh sequences.
44. The apparatus of claim 43, wherein the Walsh sequences have a length of 1/W chips, wherein W is a total operating bandwidth of the apparatus.
45. The apparatus of claim 41, further comprising means for designating transmission of the orthogonal pilot symbols on a predetermined set of subbands.
46. The apparatus of claim 45, wherein the predetermined set of subbands are the same for each of the plurality of antennas.
47. The apparatus of claim 41, further comprising means for applying a cyclic prefix to each pilot symbol.
48. The apparatus of claim 41, further comprising means for transmitting the orthogonal pilot symbols during predetermined time slots.
49. The apparatus of claim 48, wherein the predetermined time slots are the same for each of the plurality of antennas.
50. A wireless communication apparatus comprising:
a plurality of antennas;
a plurality of modulators coupled to the plurality of antennas; and
a transmit data processor, coupled to the plurality of modulators, that provides a plurality of orthogonal pilot symbols for each antenna, so that each pilot symbol for each antenna is orthogonal to the pilot symbols of the other antennas.', 'a plurality of antennas;', 'a plurality of modulators coupled to the plurality of antennas; and', 'a transmit data processor, coupled to the plurality of modulators, that provides a plurality of orthogonal pilot symbols for each antenna, so that each pilot symbol for each antenna is orthogonal to the pilot symbols of the other antennas.
51. The apparatus of claim 50, wherein a different orthogonal sequence is used for each antenna.
52. The apparatus of claim 50, wherein the orthogonal sequences are Walsh sequences.
53. The apparatus of claim 52, wherein the Walsh sequences have a length of 1/W chips, wherein W is a total operating bandwidth of the apparatus.
54. The apparatus of claim 50, wherein the pilot symbols are transmitted on a predetermined set of subbands.
55. The apparatus of claim 54, wherein the predetermined set of subbands are the same for each of the plurality of antennas.
56. The apparatus of claim 50, wherein the modulators apply a cyclic prefix to each pilot symbol.
57. The apparatus of claim 41, wherein the pilot symbols are transmitted during predetermined time slots.
58. The apparatus of claim 57, wherein the predetermined time slots are the same for each of the plurality of antennas.']
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.