Detecting delimiters for low-overhead communication in a network
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01R-031/08
G06F-011/00
G08C-015/00
H04W-088/04
H04L-025/20
H04L-001/16
H04W-084/04
H04L-012/413
H04L-025/02
출원번호
US-0150605
(2014-01-08)
등록번호
US-9326317
(2016-04-26)
발명자
/ 주소
Yonge, III, Lawrence Winston
Katar, Srinivas
출원인 / 주소
QUALCOMM Incorporated
대리인 / 주소
DeLizio Law, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
213
초록▼
A waveform communicated from a first station to a second station over a shared medium may include at least the first symbol comprising a first set of frequency components at predetermined carrier frequencies modulated with preamble information and a second set of frequency components at predetermine
A waveform communicated from a first station to a second station over a shared medium may include at least the first symbol comprising a first set of frequency components at predetermined carrier frequencies modulated with preamble information and a second set of frequency components at predetermined carrier frequencies modulated with frame control information. The first symbol may comprise a single symbol delimiter.
대표청구항▼
1. A method for receiving a delimiter, the method comprising: receiving, via a communication medium at a second station, a first symbol from a first station, wherein the first symbol includes at least, a first set of frequency components at predetermined carrier frequencies modulated with preamble i
1. A method for receiving a delimiter, the method comprising: receiving, via a communication medium at a second station, a first symbol from a first station, wherein the first symbol includes at least, a first set of frequency components at predetermined carrier frequencies modulated with preamble information, anda second set of frequency components at predetermined carrier frequencies modulated with frame control information, andthe first symbol comprises a single symbol delimiter. 2. The method of claim 1, further comprising: detecting a start of the first symbol at one of multiple time slot boundaries, the detecting including, after each of the multiple time slot boundaries, periodically sampling values received via the communication medium starting at a beginning of a most recent time slot boundary of the multiple time slot boundaries, andprocessing the sampled values to generate a metric value that indicates whether the start of the first symbol has been detected; anddemodulating, at the second station, the first symbol from the sampled values in response to detecting the start of the first symbol. 3. The method of claim 1, wherein the first symbol is preceded by a prefix representing a cyclic extension of a terminal portion of the first symbol. 4. The method of claim 1, wherein the first symbol is received from the first station via a waveform,a first portion of the waveform comprises the first symbol, the first symbol comprising a segment, anda second portion of the waveform comprises a copy of the segment that is correlated with at least the segment. 5. The method of claim 4, wherein the second portion is received prior to the first portion. 6. The method of claim 1, wherein the first symbol has a predetermined symbol length that is greater than a time duration between adjacent time slot boundaries. 7. The method of claim 1, wherein the first symbol is followed by a suffix representing a cyclic extension of an initial portion of the first symbol. 8. The method of claim 1, wherein the single symbol delimiter comprises a start of a frame delimiter. 9. The method of claim 1, wherein the first symbol is followed by a second symbol having payload data. 10. An apparatus comprising: a processor; andmemory for storing instructions which, when executed by the processor, cause the apparatus to receive, via a communication medium, a first symbol from a first station, wherein the first symbol includes at least, a first set of frequency components at predetermined carrier frequencies modulated with preamble information, anda second set of frequency components at predetermined carrier frequencies modulated with frame control information, andthe first symbol comprises a single symbol delimiter. 11. The apparatus of claim 10, wherein the instructions, when executed by the processor, cause the apparatus to: detect a start of the first symbol at one of multiple time slot boundaries, the detecting including, after each of the multiple time slot boundaries, periodically sampling values received via the communication medium starting at a beginning of a most recent time slot boundary of the multiple time slot boundaries, andprocessing the sampled values to generate a metric value that indicates whether the start of the first symbol has been detected; anddemodulate the first symbol from the sampled values in response to detecting the start of the first symbol. 12. The apparatus of claim 10, wherein the first symbol is preceded by a prefix representing a cyclic extension of a terminal portion of the first symbol. 13. The apparatus of claim 10, wherein the first symbol is received from the first station via a waveform,a first portion of the waveform comprises the first symbol, the first symbol comprising a segment, anda second portion of the waveform comprises a copy of the segment that is correlated with at least the segment. 14. The apparatus of claim 13, wherein the second portion is received prior to the first portion. 15. The apparatus of claim 10, wherein the first symbol is followed by a suffix representing a cyclic extension of an initial portion of the first symbol. 16. A non-transitory computer readable medium storing instructions which, when executed by a processor of a first station, cause the first station to perform operations comprising: receiving, via a communication medium at a second station, a first symbol, wherein the first symbol includes at least, a first set of frequency components at predetermined carrier frequencies modulated with preamble information, anda second set of frequency components at predetermined carrier frequencies modulated with frame control information, andthe first symbol comprises a single symbol delimiter. 17. The non-transitory computer readable medium of claim 16, wherein the instructions, when executed by the processor, cause the first station to perform operations that further comprise: detect a start of the first symbol at one of multiple time slot boundaries, the detecting including, after each of the multiple time slot boundaries,periodically sampling values received via the communication medium starting at a beginning of a most recent time slot boundary of the multiple time slot boundaries, andprocessing the sampled values to generate a metric value that indicates whether the start of the first symbol has been detected; anddemodulating, at the second station, the first symbol from the sampled values in response to detecting the start of the first symbol. 18. The non-transitory computer readable medium of claim 16, wherein the first symbol is preceded by a prefix representing a cyclic extension of a terminal portion of the first symbol. 19. The non-transitory computer readable medium of claim 16, wherein the first symbol is received from the first station via a waveform,a first portion of the waveform comprises the first symbol, the first symbol comprising a segment, anda second portion of the waveform comprises a copy of the segment that is correlated with at least the segment. 20. The non-transitory computer readable medium of claim 19, wherein the second portion is received prior to the first portion.
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