Abstract
A method and apparatus for transmitting and receiving control information in an SC-FDMA system are provided in which different cyclic shift values are generated for different SC-FDMA symbols in one of a slot and a subframe a sequence allocated for CDM of control information is cyclically shifted by the cyclic shift values and a control channel signal including the control information is combined with the cyclically shifted sequences on an SC-FDMA symbol basis and transmitted in the SC-FDMA symbols.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
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Specification Information
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Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. A method for transmitting control information in a Single Carrier-Frequency Division Multiple Access (SC-FDMA) system, comprising: generating different cyclic shift values for different SC-FDMA symbols in one of a slot and a subframe; cyclically shifting a sequence allocated for Code Division Multiplexing (CDM) of control information by the cyclic shift values; and combining a control channel signal including the control information with the cyclically shifted sequences on an SC-FDMA symbol basis and transmitting the combined control channel signal in the SC-FDMA symbols.
2. The method of claim 1, wherein a combination of the cyclic shift values is different for each cell.
3. The method of claim 1, wherein a combination of the cyclic shift values is different for at least one of each cell and each User Equipment (UE) and signaled from a Node B to a UE.
4. The method of claim 1, wherein the sequence is a cell-specific Zadoff-Chu (ZC) sequence.
5. The method of claim 1, wherein the combining and transmission comprises changing the phases of as many control symbols carrying the control information as the number of the SC-FDMA symbols according to the phases of the cyclically shifted sequences and transmitting the phase-changed control symbols.
6. The method of claim 1, further comprising transmitting a pilot signal in predetermined SC-FDMA symbols of the one of the slot and the subframe by applying cell-specific random time-domain cyclic shift values to the pilot signal.
7. A method for receiving control information in a Single Carrier- Frequency Division Multiple Access (SC-FDMA) system, comprising: generating different cyclic shift values for different SC-FDMA symbols in one of a slot and a subframe; cyclically shifting a sequence allocated for Code Division Multiplexing (CDM) of control information by the cyclic shift values; and acquiring the control information by demultiplexing a received control channel signal by conjugate sequences of the cyclically shifted sequences.
8. The method of claim 7, wherein a combination of the cyclic shift values is different for each cell.
9. The method of claim 7, wherein a combination of the cyclic shift values is different for at least one of each cell and each User Equipment (UE) and signaled from a Node B to a UE
10. The method of claim 7, wherein the sequence is a cell-specific Zadoff-Chu (ZC) sequence
11. The method of claim 7, wherein the acquisition comprises changing the phases of as many control symbols carrying the control information as the number of the SC-FDMA symbols according to the phases of the conjugate sequences
12. The method of claim 7, further comprising receiving a pilot signal to which cell-specific random time-domain cyclic shift values are applied, in predetermined SC-FDMA symbols of the one of the slot and the subframe
13. An apparatus for transmitting control information in a Single Carrier-Frequency Division Multiple Access (SC-FDMA) system, comprising: a control information generator for generating control information; a sequence generator for generating a sequence allocated for Code Division Multiplexing (CDM) of the control information; a randomizer for cyclically shifting the sequence by different cyclic shift values to be used for different SC-FDMA symbols in one of a slot and a subframe; and a transmitter for combining a control channel signal including the control information with the cyclically shifted sequences on an SC-FDMA symbol basis and transmitting the combined control channel signal
14. The apparatus of claim 13, wherein a combination of the cyclic shift values is different for each cell
15. The apparatus of claim 13, wherein a combination of the cyclic shift values is different for at least one of each cell and each User Equipment (UE) and signaled from a Node B to a UE
16. The apparatus of claim 13, wherein the sequence is a cell- specific Zadoff-Chu (ZC) sequence
17. The apparatus of claim 13, wherein the transmitterr changes the phases of as many control symbols carrying the control information as the number of the SC-FDMA symbols according to the phase values of the cyclically shifted sequences
18. The apparatus of claim 13, further comprising a pilot signal generator for generating and transmitting a pilot signal in predetermined SC- FDMA symbols of the one of the slot and the subframe by applying cell-specific random time-domain cyclic shift values to the pilot signal
19. An apparatus for receiving control information in a Single Carrier-Frequency Division Multiple Access (SC-FDMA) system, comprising: a receiver for receiving a control channel signal including control information; and a control channel signal receiver for cyclically shifting a conjugate sequence of a sequence allocated for Code Division Multiplexing (CDM) of control information on an SC-FDMA symbol basis by different cyclic shift values for different SC-FDMA symbols in one of a slot and a subframe, and acquiring the control information by demultiplexing the control channel signal using conjugate sequences of the cyclically shifted sequences.
20. The apparatus of claim 19, wherein a combination of the cyclic shift values is different for each cell.
21. The apparatus of claim 19, wherein a combination of the cyclic shift values is different for at least one of each cell and each User Equipment (UE) and signaled from a Node B to a UE.
22. The apparatus of claim 19, wherein the sequence is a cell- specific Zadoff-Chu (ZC) sequence.
23. The apparatus of claim 19, wherein the control channel signal receiver changes the phases of as many control symbols carrying the control information as the number of the SC-FDMA symbols according to the phase values of the conjugate sequences.
24. The apparatus of claim 19, further comprising a pilot receiver for receiving a pilot signal to which cell-specific random time-domain cyclic shift values are applied, in predetermined SC-FDMA symbols of the one of the slot and the subframe.
25. An apparatus for transmitting control information in a Single Carrier-Frequency Division Multiple Access (SC-FDMA) system, comprising: a control channel signal generator for generating a control channel signal including control information; a sequence generator for generating a sequence allocated for Code Division Multiplexing (CDM) of the control information; a randomizer for generating different phase values to be used for different SC-FDMA symbols in one of a slot and a subframe and rotating the phases of the sequence by the phase values, a combination of the phase values being at least one of User Equipment (UE)-specific and cell-specific; and a transmitter for combiningg the control channel signal with the phase- rotated sequences on an SC-FDMA symbol basis and transmitting the combined control channel signal.']
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SUMMARY
ClaimChart-WO2008082280A1-STO
Patent number:WO2008082280A1
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
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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.