Abstract
A method and apparatus for transmitting and receiving control information in an SC-FDMA system are provided. Different orthogonal codes are generated for different slots each including a plurality of SC-FDMA symbols in a subframe. A control channel signal is generated by multiplying control symbols carrying control information by a sequence allocated for CDM of the control information. The control channel signal is multiplied by chips of the orthogonal codes 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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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
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Specification Information
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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
Resource configuration Multiple access
Product
Base Station (eNB/gNB)User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
Transmitting/receiving of control channel/control information
Claim
1. A method for transmitting control information by a transmitter in a Single Carrier-Frequency Division Multiple Access (SC-FDMA) system, comprising the steps of:
generating different orthogonal codes for different slots, each comprising a plurality of SC-FDMA symbols in a subframe;
generating, by the transmitter, a control channel signal by multiplying control symbols carrying control information by a sequence; and
multiplying the control channel signal by chips of the orthogonal codes on an SC-FDMA symbol basis, and transmitting the multiplied control channel signal in the SC-FDMA symbols.', 'generating different orthogonal codes for different slots, each comprising a plurality of SC-FDMA symbols in a subframe;', 'generating, by the transmitter, a control channel signal by multiplying control symbols carrying control information by a sequence; and', 'multiplying the control channel signal by chips of the orthogonal codes on an SC-FDMA symbol basis, and transmitting the multiplied control channel signal in the SC-FDMA symbols.
2. The method of claim 1, wherein a combination of the orthogonal codes used in the subframe is different for each cell.
3. The method of claim 1, wherein a combination of the orthogonal codes used in the subframe is different for at least one of each cell and each User Equipment (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 multiplication and transmission comprises multiplying as many control symbols carrying the control information as the number of the SC-FDMA symbols by the randomized sequences and transmitting the multiplied control symbols.
6. A method for receiving control information by a receiver in a Single Carrier-Frequency Division Multiple Access (SC-FDMA) system, comprising the steps of:
generating different orthogonal codes for different slots each comprising a plurality of SC-FDMA symbols in a subframe;
multiplying by the receiver, a received control channel signal by a conjugate sequence of a sequence; and
acquiring the control information by multiplying the multiplied control channel signal by chips of the orthogonal codes on an SC-FDMA symbol basis.', 'generating different orthogonal codes for different slots each comprising a plurality of SC-FDMA symbols in a subframe;', 'multiplying by the receiver, a received control channel signal by a conjugate sequence of a sequence; and', 'acquiring the control information by multiplying the multiplied control channel signal by chips of the orthogonal codes on an SC-FDMA symbol basis.
7. The method of claim 6, wherein a combination of the orthogonal codes used in the subframe is different for each cell.
8. The method of claim 6, wherein a combination of the orthogonal codes used in the subframe is different for at least one of each cell and each User Equipment (UE).
9. The method of claim 6, wherein the sequence is a cell-specific Zadoff-Chu (ZC) sequence
10. The method of claim 6, wherein the acquisition comprises multiplying as many control symbols forming the control channel signal as the number of the SC-FDMA symbols by the conjugate sequence
11. 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 by multiplying control symbols comprising control information by a sequence; and
a transmitter for generating different orthogonal codes for different slots each comprising a plurality of SC-FDMA symbols in a subframe, multiplying the control channel signal by chips of the orthogonal codes on an SC-FDMA symbol basis, and transmitting the multiplied control channel signal in the SC-FDMA symbols.', 'a control channel signal generator for generating a control channel signal by multiplying control symbols comprising control information by a sequence; and', 'a transmitter for generating different orthogonal codes for different slots each comprising a plurality of SC-FDMA symbols in a subframe, multiplying the control channel signal by chips of the orthogonal codes on an SC-FDMA symbol basis, and transmitting the multiplied control channel signal in the SC-FDMA symbols
12. The apparatus of claim 11, wherein a combination of the orthogonal codes used in the subframe is different for each cell
13. The apparatus of claim 11, wherein a combination of the orthogonal codes used in the subframe is different for at least one of each cell and each User Equipment (UE)
14. The apparatus of claim 11, wherein the sequence is a cell-specific Zadoff-Chu (ZC) sequence
15. The apparatus of claim 11, wherein the randomizer multiplies as many control symbols comprising the control information as the number of the SC-FDMA symbols by the randomized sequences and transmitting the multiplied control symbols
16. 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 comprising control information; and
a control channel signal receiver for multiplying the control channel signal by a conjugate sequence of a sequence and acquiring the control information by multiplying the multiplied control channel signal by chips of different orthogonal codes used for different slots each comprising a plurality of SC-FDMA symbols in a subframe, on an SC-FDMA symbol basis.', 'a receiver for receiving a control channel signal comprising control information; and', 'a control channel signal receiver for multiplying the control channel signal by a conjugate sequence of a sequence and acquiring the control information by multiplying the multiplied control channel signal by chips of different orthogonal codes used for different slots each comprising a plurality of SC-FDMA symbols in a subframe, on an SC-FDMA symbol basis
17. The apparatus of claim 16, wherein a combination of the orthogonal codes used in the subframe is different for each cell
18. The apparatus of claim 16, wherein a combination of the orthogonal codes used in the subframe is different for at least one of each cell and each User Equipment (UE)
19. The apparatus of claim 16, wherein the sequence is a cell-specific Zadoff-Chu (ZC) sequence.
20. The apparatus of claim 16, wherein the control channel signal receiver multiplies as many control symbols forming the control channel signal as the number of the SC-FDMA symbols by the orthogonal codes.']
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ClaimChart-US8179780B2-STO
Patent number:US8179780B2
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