Abstract
Provided is a method and apparatus for transmitting and receiving a Broadcast Channel (BCH) in a cellular communication system. The method for transmitting a BCH in a cellular communication system includes repeating symbols comprising information about the BCH, code-covering the repeated symbols with codes selected from a previously given code set, subcarrier-mapping the code-covered symbols, and transmitting the subcarrier-mapped symbols in one frame by using different beams corresponding to the selected codes. The codes are selected based on a number of repetitions, a cell identifier, and a beam index.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
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US2014086217A1 | 5G | 26/05/2020 | ISLD-202005-049 | SAMSUNG |
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Claim
1. A method for transmitting a signal of a Broadcast Channel (BCH) in a cellular communication system, the method comprising:
repeating, by a transmitter, symbols comprising information about the BCH;
masking, by the transmitter, the repeated symbols with at least one code selected from a given code set based on a number of repetitions of the symbols and a beam index indicating a beam for transmission of the BCH;
subcarrier-mapping, by the transmitter, the masked symbols; and
transmitting, by the transmitter, the subcarrier-mapped symbols by using the beam corresponding to the selected at least one code.
2. The method of claim 1, wherein the at least one code is selected from the given code set according to a predefined rule based on a cell identifier of a cell in which the BCH is transmitted and the beam index used in transmission of the BCH.
3. The method of claim 1, wherein the subcarrier-mapped symbols are transmitted in a plurality of regions that are separated at equal intervals in a frame by using different beams for the plurality of regions.
4. The method of claim 1, wherein the subcarrier-mapped symbols are transmitted in a plurality of consecutive regions of a forepart of a frame by using different beams for the plurality of consecutive regions.
5. The method of claim 1, wherein the at least one code is selected by a code index calculated using:
Code c=(IDcell+w)mod R,
wherein c indicates the code index, IDcell indicates a cell index of a cell in which the BCH is transmitted, w indicates a beam index used for the BCH, and R indicates a number of repetitions of the symbols.
6. The method of claim 1, wherein the given code set comprises a plurality of Walsh Hadamard codes.
7. The method of claim 1, wherein a number of repetitions of the symbols is determined by one or more of a structure of a base station that transmits the BCH and a total number of antenna devices available for the BCH.
8. The method of claim 1, wherein a number of repetitions of the symbols is determined by a number of transmission beams available for the BCH.
9. The method of claim 1, wherein the subcarrier-mapping of the masked symbols comprises mapping symbols corresponding to repetitions of one symbol to adjacent frequency tones or time symbols.
10. A method for receiving a signal of a Broadcast Channel (BCH) in a cellular communication system, the method comprising:
configuring, by a receiver, a reception vector comprising a predetermined number of symbols that comprise information about the BCH based on a reception signal received from a transmitter;
detecting, by the receiver, at least one code of a given code set, which is applied to masking of the symbols, from the reception vector;
detecting, by the receiver, a beam index indicating a beam used for transmission of the BCH, based on a code index of the at least one detected code; and
determining, by the receiver, a boundary of a frame used in communication between the transmitter and the receiver, based on the beam index.
11. The method of claim 10, wherein the beam index is detected based on the code index, a number of repeated symbols that form the reception vector, and a cell identifier of a cell in which the BCH is transmitted.
12. The method of claim 10, wherein the reception vector is transmitted in a plurality of regions that are separated at equal intervals in the frame by using different beams for the plurality of regions.
13. The method of claim 10, wherein the reception vector is transmitted in a plurality of consecutive regions of a forepart of the frame by using different beams for the plurality of consecutive regions.
14. The method of claim 10, wherein the beam index is calculated using:
Code c=(IDcell+w)mod R,
wherein c indicates the code index, IDcell indicates a cell index of a cell in which the BCH is transmitted, w indicates a beam index used for the BCH, and R indicates a number of repeated symbols of the reception vector.
15. The method of claim 10, wherein the given code set comprises a plurality of Walsh Hadamard codes.
16. The method of claim 10, wherein a number of repeated symbols of the reception vector is determined by one or more of a structure of a base station that transmits the BCH and a total number of antenna devices available for the BCH.
17. The method of claim 10, wherein a number of repeated symbols of the reception vector is determined by a number of transmission beams available for the BCH in a base station that transmits the BCH.
18. The method of claim 10, wherein a number of the repeated symbols of the reception vector is obtained from a Synchronization Channel (SCH) transmitted from a base station.
19. An apparatus for transmitting a Broadcast Channel (BCH) in a cellular communication system, the apparatus comprising:
a memory element; and
a controller coupled to the memory element, the controller configured to control:
repeat symbols comprising information about the BCH;
mask the repeated symbols with at least one code selected from a given code set based on a number of repetitions of the symbols and a beam index indicating a beam for transmission of the BCH;
subcarrier-map the masked symbols; and
a transmitter configured to transmit the subcarrier-mapped symbols by using the beam corresponding to the at least one selected code.
20. The apparatus of claim 19, wherein the at least one code is selected from the given code set according to a predefined rule based on a cell identifier of a cell in which the BCH is transmitted and the beam index used in the BCH.
21. The apparatus of claim 19, wherein the subcarrier-mapped symbols are transmitted in a plurality of regions that are separated at equal intervals in a frame by using different beams for the plurality of regions.
22. The apparatus of claim 19, wherein the subcarrier-mapped symbols are transmitted in a plurality of consecutive regions of a forepart of a frame by using different beams for the plurality of consecutive regions.
23. The apparatus of claim 19, wherein the at least one code is selected by a code index calculated using:
Code c=(IDcell+w)mod R,
wherein c indicates the code index, IDcell indicates a cell index of a cell in which the BCH is transmitted, w indicates a beam index used for the BCH, and R indicates a number of repetitions of the symbols.
24. The apparatus of claim 19, wherein the given code set comprises a plurality of Walsh Hadamard codes.
25. The apparatus of claim 19, wherein a number of repetitions of the symbols is determined by one or more of a structure of a base station that transmits the BCH and a total number of antenna devices available for the BCH.
26. The apparatus of claim 19, wherein a number of repetitions of the symbols is determined by a number of transmission beams available for the BCH.
27. The apparatus of claim 19, wherein the subcarrier-mapper maps symbols corresponding to repetitions of one symbol to adjacent frequency tones or time symbols.
28. An apparatus for receiving a Broadcast Channel (BCH) in a cellular communication system, the apparatus comprising:
a memory element;
a receiver configured to receive a reception signal from a transmitter; and
a controller coupled to the memory element and the receiver, the controller configured to:
configured a reception vector comprising a predetermined number of symbols that comprise information about the BCH based on the reception signal,
detect at least one code of a given code set, which are applied to masking of the symbols, from the reception vector,
detect a beam index indicating a beam used for transmission of the BCH, based on a code index of the at least one detected code, and
determine a boundary of a frame used in communication between the transmitter and the receiver, based on the beam index.
29. The apparatus of claim 28, wherein the beam index is detected based on the code index, a number of repeated symbols that form the reception vector, and a cell identifier of a cell in which the BCH is transmitted.
30. The apparatus of claim 28, wherein the reception vector is transmitted in a plurality of regions that are separated at equal intervals in the frame by using different beams for the plurality of regions.
31. The apparatus of claim 28, wherein the reception vector is transmitted in a plurality of consecutive regions of a forepart of the frame by using different beams for the plurality of consecutive regions.
32. The apparatus of claim 28, wherein the beam index is calculated using:
Code c=(IDcell+w)mod R,
wherein c indicates the code index, IDcell indicates a cell index of a cell in which the BCH is transmitted, w indicates a beam index used for the BCH, and R indicates a number of repeated symbols of the reception vector.
33. The apparatus of claim 28, wherein the given code set comprises a plurality of Walsh Hadamard codes.
34. The apparatus of claim 28, wherein a number of repeated symbols of the reception vector is determined by one or more of a structure of a base station that transmits the BCH and a total number of antenna devices available for the BCH.
35. The apparatus of claim 28, wherein a number of repeated symbols of the reception vector is determined by a number of transmission beams available for the BCH in a base station that transmits the BCH.
36. The apparatus of claim 28, wherein a number of repeated symbols of the reception vector is obtained from a Synchronization Channel (SCH) transmitted from a base station.
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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.
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.