Abstract
A method and apparatus for transmitting or detecting primary synchronization signal. The receiver receives primary synchronization signal from a transmitter, and detects the sequence used in the received primary synchronization signal by using three root indexes. Here, the primary synchronization signal is generated by using a Zadoff-Chu sequence having one of the three root indexes. The three root indexes comprise a first index and a second index, and a sum of the first index and the second index corresponds to the length of the Zadoff-Chu sequence.
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Specification Information
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Technologies
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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S1
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Technologies
Product
Use Cases
Services
Claim
1. A system, comprising:
a receiver that receives a radio signal; and
a processor that detects, in the radio signal, a sequence that is based on a Zadoff-Chu sequence, a first portion of the sequence being mapped on a frequency domain before a Direct Current (DC) frequency, and a second portion of the sequence being mapped on the frequency domain after the DC frequency, wherein the sequence satisfies a conjugate symmetry property.
2. The system of claim 1, wherein the Zadoff-Chu sequence has an odd number length.
3. The system of claim 2, wherein the odd number length is 63.
4. The system of claim 1, wherein the sequence has an even number length.
5. The system of claim 4, wherein the even number length is 62.
6. The system of claim 1, wherein the radio signal is a primary synchronization signal.
7. The system of claim 1, wherein the sequence is based on a following equation:
exp
?
(
-
i
?
M
?
?
?
?
?
n
?
(
n
+
1
)
N
)
,
wherein �N� is a length of the Zadoff-Chu sequence, �M� is a root index of the Zadoff-Chu sequence, and �n� is an index of each of constituent components of the sequence.
8. The system of claim 7, wherein a first 31 constituent components of the sequence are continuously mapped to frequency resource elements having indices in a range of �?31� to �?1�.
9. The system of claim 8, wherein a last 31 constituent components of the sequence are continuously mapped to frequency resource elements having indices in a range of �1� to �31�.
10. A computer-implemented method, comprising:
receiving, by a device operatively coupled to a processor, a radio signal; and
detecting in the radio signal, by the device, a sequence that is based on a Zadoff-Chu sequence, a first portion of the sequence being mapped on a frequency domain before a Direct Current (DC) frequency, and a second portion of the sequence being mapped on the frequency domain after the DC frequency, wherein the sequence satisfies a conjugate symmetry property.
11. The computer-implemented method of claim 10, wherein the Zadoff-Chu sequence has an odd number length.
12. The computer-implemented method of claim 11, wherein the odd number length is 63.
13. The computer-implemented method of claim 10, wherein the sequence has an even number length.
14. The computer-implemented method of claim 13, wherein the even number length is 62.
15. The computer-implemented method of claim 10, wherein the radio signal is a primary synchronization signal.
16. The computer-implemented method of claim 10, wherein the sequence is based on a following equation:
exp
?
(
-
i
?
M
?
?
?
?
?
n
?
(
n
+
1
)
N
)
,
wherein �N� is a length of the Zadoff-Chu sequence, �M� is a root index of the Zadoff-Chu sequence, and �n� is an index of each of constituent components of the sequence.
17. The computer-implemented method of claim 16, wherein a first 31 constituent components of the sequence are continuously mapped to frequency resource elements having indices in a range of �?31� to �?1�.
18. The computer-implemented method of claim 17, wherein a last 31 constituent components of the sequence are continuously mapped to frequency resource elements having indices in a range of �1� to �31�.
19. A device, comprising:
a processor that generates a sequence based on a Zadoff-Chu sequence by mapping a first portion of the sequence on a frequency domain before a Direct Current (DC) frequency and mapping a second portion of the sequence on the frequency domain after the DC frequency, wherein the sequence satisfies a conjugate symmetry property; and
a transmitter that transmits a radio signal containing the sequence.
20. The device of claim 19, wherein the Zadoff-Chu sequence has an odd number length and the sequence has an even number length.
Associated Portfolios
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
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.