Signaling methods and apparatus
View Patent ↗A transmission apparatus and transmitting method for signaling parameters of a preamble, and a reception apparatus and receiving method for decoding the preamble. The transmitting method includes generating, using processing circuitry of a transmission apparatus, a bootstrap symbol based on the parameters of the preamble. The bootstrap symbol is prefixed to a frame that includes the preamble using the circuitry. The bootstrap symbol is selected from a plurality of patterns. Further, the plurality of patterns represent at least a subset of predetermined combinations of the parameters of the preamble including an FFT (Fast Fourier Transform) size, a guard interval, a frequency domain displacement component of a SPP (Scattered Pilot Pattern) and a L1 mode.
1. A method for signaling parameters of a preamble, the method comprising:
generating, by processing circuitry of a transmission apparatus, a bootstrap symbol based on one of a plurality of different predetermined combinations of the parameters of the preamble; and
prefixing, by the processing circuitry, the bootstrap symbol to a frame that includes the preamble, wherein
the bootstrap symbol indicates a single 8-bit value of a plurality of 8-bit values, the single 8-bit value being associated with the one of the plurality of different predetermined combinations of the parameters of the preamble,
each of the plurality of different predetermined combinations is associated with a different one of the plurality of 8-bit values, and
the parameters of the preamble include an FFT (Fast Fourier Transform) size, a guard interval length, a frequency domain displacement component of a SPP (Scattered Pilot Pattern) and a L1 mode.
2. The method of claim 1 , wherein a time domain displacement component of the SPP for each of the different predetermined combinations is equal to one.
3. The method of claim 1 , wherein the FFT size indicated by at least a first one of the plurality of 8-bit values is 8K, the FFT size indicated by at least a second one of the plurality of 8-bit values is 16K, and the FFT size indicated by at least a third one of the plurality of 8-bit values is 32K.
4. The method of claim 1 , wherein the plurality of different predetermined combinations includes frequency domain displacements of 8 and 16.
5. The method of claim 1 , wherein the bootstrap symbol has a predetermined number of eight bits.
6. The method of claim 1 , wherein the different predetermined combinations of FFT size, the guard interval length, and the frequency domain displacement component of the SPP associated with the plurality of predetermined values are:
Guard
interval
length
(samples)
8K FFT
16K FFT
32K FFT
192
SP16_1
SP32_1
SP32_1
384
SP8_1
SP16_1
SP32_1
512
SP6_1
SP12_1
SP24_1
768
SP4_1
SP8_1
SP16_1
1024
SP3_1
SP6_1
SP12_1
1536
SP4_1
SP4_1
SP8_1
2048
SP3_1
SP3_1
SP6_1
2432
NA
SP3_1
SP6_1
3072
NA
SP4_1
SP3_1, SP8_1
3648
NA
SP4_1
SP3_1, SP8_1
4096
NA
SP3_1
SP3_1
4864
NA
NA
SP3_1.
7. The method of claim 1 , wherein the different predetermined combinations include at least one combination for each of a plurality of guard intervals.
8. A transmission apparatus, comprising:
a memory, and
circuitry configured to
generate a bootstrap symbol based on one of a plurality of different predetermined combinations of parameters of a preamble; and
prefix the bootstrap symbol to a frame that includes the preamble, wherein
the bootstrap symbol indicates a single 8-bit value of a plurality of 8-bit values, the single 8-bit value being associated with the one of the plurality of different combinations of the parameters of the preamble,
each of the plurality of different predetermined combinations is associated with a different one of the plurality of 8-bit values, and
the parameters of the preamble include an FFT (Fast Fourier Transform) size, a guard interval length, a frequency domain displacement component of a SPP (Scattered Pilot Pattern) and a L1 mode.
9. A method for decoding a preamble of a frame, the method comprising:
detecting, by processing circuitry of a reception apparatus, a bootstrap symbol; and
determining, by the processing circuitry, one of a plurality of different predetermined combinations of parameters of the preamble based on which one of a plurality of 8-bit values is indicated by the bootstrap symbol, wherein
each of the plurality of different predetermined combinations is associated with a different one of the plurality of 8-bit values, and
the parameters include an FFT (Fast Fourier Transform) size, a guard interval length, a frequency domain displacement component of a SPP (Scattered Pilot Pattern) and a L1 mode.
10. The method of claim 9 , further comprising:
decoding, by the processing circuitry, the preamble based on the determined one of the plurality of different predetermined combinations of the parameters to obtain signaling data of a payload of the frame, and
decoding the payload using the signaling data of the payload.
11. The method of claim 9 , wherein a time domain displacement component of the SPP for each of the different predetermined combinations is equal to one.
12. The method of claim 9 , wherein the FFT size indicated by at least a first one of the plurality of 8-bit values is 8K, the FFT size indicated by at least a second one of the plurality of 8-bit values is 16K, and the FFT size indicated by at least a third one of the plurality of 8-bit values is 32K.
13. The method of claim 9 , wherein the plurality of different predetermined combinations includes frequency domain displacements of 8 and 16.
14. The method of claim 9 , wherein the bootstrap symbol has a predetermined number of eight bits.
15. The method of claim 9 , wherein the different predetermined combinations of the FFT size, the guard interval length, and the frequency domain displacement component of the SPP associated with the plurality of predetermined values are:
Guard
interval
length
(samples)
8K FFT
16K FFT
32K FFT
192
SP16_1
SP32_1
SP32_1
384
SP8_1
SP16_1
SP32_1
512
SP6_1
SP12_1
SP24_1
768
SP4_1
SP8_1
SP16_1
1024
SP3_1
SP6_1
SP12_1
1536
SP4_1
SP4_1
SP8_1
2048
SP3_1
SP3_1
SP6_1
2432
NA
SP3_1
SP6_1
3072
NA
SP4_1
SP3_1, SP8_1
3648
NA
SP4_1
SP3_1, SP8_1
4096
NA
SP3_1
SP3_1
4864
NA
NA
SP3_1.
16. The method of claim 9 , wherein the different predetermined combinations include at least one combination for each of a plurality of guard intervals.
17. A reception apparatus, comprising:
a memory, and
circuitry configured to
detect a bootstrap symbol,
determine one of a plurality of different predetermined combinations of parameters of a preamble of a frame based on which one of a plurality of 8-bit values is indicated by the bootstrap symbol, wherein
each of the plurality of different predetermined combinations is associated with a different one of the plurality of 8-bit values, and
the parameters include an FFT (Fast Fourier Transform) size, a guard interval length, a frequency domain displacement component of a SPP (Scattered Pilot Pattern) and a L1 mode.
18. The reception apparatus of claim 17 , wherein the circuitry is further configured to:
decode the preamble based on the determined one of the plurality of different predetermined combinations of the parameters to obtain signaling data of a payload of the frame, and
decode the payload using the signaling data of the payload.
19. The reception apparatus of claim 17 , wherein a time domain displacement component of the SPP for each of the different predetermined combinations is equal to one.
20. The reception apparatus of claim 17 , wherein the FFT size indicated by at least a first one of the plurality of 8-bit values is 8K, the FFT size indicated by at least a second one of the plurality of 8-bit values is 16K, and the FFT size indicated by at least a third one of the plurality of 8-bit values is 32K.
21. The reception apparatus of claim 17 , wherein the frequency domain displacement in the predetermined combinations is predefined.
22. The reception apparatus of claim 17 , wherein the bootstrap symbol has a predetermined number of eight bits.
23. The reception apparatus of claim 17 , wherein the different predetermined combinations of the FFT size, the guard interval length, and the frequency domain displacement component of the SPP associated with the plurality of predetermined values are:
Guard
interval
length
(samples)
8K FFT
16K FFT
32K FFT
192
SP16_1
SP32_1
SP32_1
384
SP8_1
SP16_1
SP32_1
512
SP6_1
SP12_1
SP24_1
768
SP4_1
SP8_1
SP16_1
1024
SP3_1
SP6_1
SP12_1
1536
SP4_1
SP4_1
SP8_1
2048
SP3_1
SP3_1
SP6_1
2432
NA
SP3_1
SP6_1
3072
NA
SP4_1
SP3_1, SP8_1
3648
NA
SP4_1
SP3_1, SP8_1
4096
NA
SP3_1
SP3_1
4864
NA
NA
SP3_1.
24. The reception apparatus of claim 19 , wherein the different predetermined combinations include at least one combination for each of a plurality of guard intervals.